Government · history · all letters
Past officeholders — D
572 people whose surname begins with D and whose last term has ended in the record. Anybody still serving is on Who holds office.
- Abraham DowdneyU.S. Representative · New York's 12th districtParty: Democraticlast term ended 1887
- Alan DixonU.S. Senator · IllinoisParty: Democraticlast term ended 1993
- Albert DawsonU.S. Representative · Iowa's 2nd districtParty: Republicanlast term ended 1911
- Albert DouglasU.S. Representative · Ohio's 11th districtParty: Republicanlast term ended 1911
- Alexander DavidsonU.S. Representative · Alabama's 4th districtParty: Democraticlast term ended 1889
- Alexander DavisU.S. Representative · Virginia's 5th districtParty: Democraticlast term ended 1875
- Alexander DivenU.S. Representative · New York's 27th districtParty: Republicanlast term ended 1863
- Alexander DockeryU.S. Representative · Missouri's 3rd districtParty: Democraticlast term ended 1899
- Alexander DuncanU.S. Representative · Ohio's 1st districtParty: Democraticlast term ended 1845
- Alfonse D’AmatoU.S. Senator · New YorkParty: Republicanlast term ended 1999
- Alfred DockeryU.S. Representative · North Carolina's 3rd districtParty: Whiglast term ended 1853
- Allan DurborowU.S. Representative · Illinois's 3rd districtParty: Democraticlast term ended 1895
- Alston DaytonU.S. Representative · West Virginia's 2nd districtParty: Republicanlast term ended 1907
- Alvin DonaheyU.S. Senator · OhioParty: Democraticlast term ended 1941
- Amasa DanaU.S. Representative · New York's 26th districtParty: Democraticlast term ended 1845
- Amos DavisU.S. Representative · Kentucky's 11th districtParty: Anti Jacksonianlast term ended 1835
- Andrew DoigU.S. Representative · New York's 16th districtParty: Democraticlast term ended 1843
- Anthony DimondU.S. Representative · AlaskaParty: Democraticlast term ended 1945
- Anthony D’EspositoU.S. Representative · New York's 4th districtParty: Republicanlast term ended 2025
- Antonio DelgadoU.S. Representative · New York's 19th districtParty: Democraticlast term ended 2022
- Archibald DarraghU.S. Representative · Michigan's 11th districtParty: Republicanlast term ended 1909
- Archibald DixonU.S. Senator · KentuckyParty: Whiglast term ended 1855
- Arthur DennyU.S. Representative · WashingtonParty: Republicanlast term ended 1867
- Arthur DewaltU.S. Representative · Pennsylvania's 13th districtParty: Democraticlast term ended 1921
- Artur DavisU.S. Representative · Alabama's 7th districtParty: Democraticlast term ended 2011
- Aubert DunnU.S. Representative · Mississippi's 5th districtParty: Democraticlast term ended 1937
- Augustus DodgeU.S. Senator · IowaParty: Democraticlast term ended 1855
- Augustus DrumU.S. Representative · Pennsylvania's 19th districtParty: Democraticlast term ended 1855
- Beman DawesU.S. Representative · Ohio's 15th districtParty: Republicanlast term ended 1909
- Benjamin DeanU.S. Representative · Massachusetts's 3rd districtParty: Democraticlast term ended 1879
- Benjamin DemingU.S. Representative · Vermont's 5th districtParty: Anti Masoniclast term ended 1835
- Bernard DwyerU.S. Representative · New Jersey's 6th districtParty: Democraticlast term ended 1993
- Beverly DouglasU.S. Representative · Virginia's 1st districtParty: Democraticlast term ended 1879
- Blackburn DovenerU.S. Representative · West Virginia's 1st districtParty: Republicanlast term ended 1907
- Braswell DeenU.S. Representative · Georgia's 8th districtParty: Democraticlast term ended 1939
- Brian DonnellyU.S. Representative · Massachusetts's 11th districtParty: Democraticlast term ended 1993
- Butler DerrickU.S. Representative · South Carolina's 3rd districtParty: Democraticlast term ended 1995
- Byron DorganU.S. Senator · North DakotaParty: Democraticlast term ended 2011
- Calvin DooleyU.S. Representative · California's 20th districtParty: Democraticlast term ended 2005
- Carl DurhamU.S. Representative · North Carolina's 6th districtParty: Democraticlast term ended 1961
- Carl Van DykeU.S. Representative · Minnesota's 4th districtParty: Democraticlast term ended 1921
- Cassius DowellU.S. Representative · Iowa's 6th districtParty: Republicanlast term ended 1941
- Charles DanielU.S. Senator · South CarolinaParty: Democraticlast term ended 1954
- Charles DanielsU.S. Representative · New York's 33rd districtParty: Republicanlast term ended 1897
- Charles DavisU.S. Representative · Minnesota's 3rd districtParty: Republicanlast term ended 1925
- Charles DayanU.S. Representative · New York's 20th districtParty: Jacksonlast term ended 1833
- Charles DeaneU.S. Representative · North Carolina's 8th districtParty: Democraticlast term ended 1957
- Charles DelanoU.S. Representative · Massachusetts's 10th districtParty: Republicanlast term ended 1863
- Charles DeneenU.S. Senator · IllinoisParty: Republicanlast term ended 1931
- Charles DenisonU.S. Representative · Pennsylvania's 12th districtParty: Democraticlast term ended 1869
- Charles DeweyU.S. Representative · Illinois's 9th districtParty: Republicanlast term ended 1945
- Charles DickU.S. Senator · OhioParty: Republicanlast term ended 1911
- Charles DickermanU.S. Representative · Pennsylvania's 16th districtParty: Democraticlast term ended 1905
- Charles DietrichU.S. Senator · NebraskaParty: Republicanlast term ended 1905
- Charles DietrichU.S. Representative · Pennsylvania's 15th districtParty: Democraticlast term ended 1937
- Charles DiggsU.S. Representative · Michigan's 13th districtParty: Democraticlast term ended 1981
- Charles DillonU.S. Representative · South Dakota's 1st districtParty: Republicanlast term ended 1919
- Charles DjouU.S. Representative · Hawaii's 1st districtParty: Republicanlast term ended 2011
- Charles DorrU.S. Representative · West Virginia's 3rd districtParty: Republicanlast term ended 1899
- Charles DoughertyU.S. Representative · Florida's 2nd districtParty: Democraticlast term ended 1889
- Charles DoughertyU.S. Representative · Pennsylvania's 4th districtParty: Republicanlast term ended 1983
- Charles DouglasU.S. Representative · New Hampshire's 2nd districtParty: Republicanlast term ended 1991
- Charles DowdyU.S. Representative · Mississippi's 4th districtParty: Democraticlast term ended 1989
- Charles DowningU.S. Representative · FloridaParty: not on filelast term ended 1841
- Charles DoxeyU.S. Representative · Indiana's 9th districtParty: Republicanlast term ended 1883
- Charles DrakeU.S. Senator · MissouriParty: Republicanlast term ended 1871
- Charles DudleyU.S. Senator · New YorkParty: Jacksonlast term ended 1833
- Charles DunwellU.S. Representative · New York's 3rd districtParty: Republicanlast term ended 1909
- Charles DurkeeU.S. Senator · WisconsinParty: Republicanlast term ended 1861
- Charles W. DentU.S. Representative · Pennsylvania's 15th districtParty: Republicanlast term ended 2018
- Chauncey DepewU.S. Senator · New YorkParty: Republicanlast term ended 1911
- Chester DarrallU.S. Representative · Louisiana's 3rd districtParty: Republicanlast term ended 1883
- Christopher DoddU.S. Senator · ConnecticutParty: Democraticlast term ended 2011
- Clarence DillU.S. Senator · WashingtonParty: Democraticlast term ended 1935
- Clarence Van DuzerU.S. Representative · NevadaParty: Democraticlast term ended 1907
- Clement DickinsonU.S. Representative · MissouriParty: Democraticlast term ended 1935
- Clement DorseyU.S. Representative · Maryland's 1st districtParty: Adamslast term ended 1831
- Clement DowdU.S. Representative · North Carolina's 6th districtParty: Democraticlast term ended 1885
- Cleveland DearU.S. Representative · Louisiana's 8th districtParty: Democraticlast term ended 1937
- Clifford DavisU.S. Representative · Tennessee's 9th districtParty: Democraticlast term ended 1965
- Clyde DoyleU.S. Representative · California's 23rd districtParty: Democraticlast term ended 1965
- Colgate DardenU.S. Representative · Virginia's 2nd districtParty: Democraticlast term ended 1943
- Columbus DelanoU.S. Representative · Ohio's 13th districtParty: Republicanlast term ended 1869
- Cornelius DarraghU.S. Representative · Pennsylvania's 21st districtParty: Whiglast term ended 1847
- Cushman DavisU.S. Senator · MinnesotaParty: Republicanlast term ended 1900
- Cyrus DunhamU.S. Representative · Indiana's 3rd districtParty: Democraticlast term ended 1855
- Cyrus DureyU.S. Representative · New York's 25th districtParty: Republicanlast term ended 1911
- Daniel DeweyU.S. Representative · Massachusetts's 12th districtParty: Federalistlast term ended 1815
- Daniel DickinsonU.S. Senator · New YorkParty: Democraticlast term ended 1851
- Daniel DriscollU.S. Representative · New York's 42nd districtParty: Democraticlast term ended 1917
- Daniel DuncanU.S. Representative · Ohio's 10th districtParty: Whiglast term ended 1849
- Daniel DurellU.S. Representative · New HampshireParty: Republicanlast term ended 1809
- David DaggettU.S. Senator · ConnecticutParty: Federalistlast term ended 1819
- David DavisU.S. Senator · IllinoisParty: Independentlast term ended 1883
- David DavisU.S. Representative · Tennessee's 1st districtParty: Republicanlast term ended 2009
- David DennisU.S. Representative · Indiana's 10th districtParty: Republicanlast term ended 1975
- David DennisonU.S. Representative · Ohio's 11th districtParty: Republicanlast term ended 1959
- David DickinsonU.S. Representative · Tennessee's 7th districtParty: Whiglast term ended 1845
- David DicksonU.S. Representative · MississippiParty: Anti-Jacksonianlast term ended 1837
- David DisneyU.S. Representative · Ohio's 1st districtParty: Democraticlast term ended 1855
- David DreierU.S. Representative · California's 26th districtParty: Republicanlast term ended 2013
- David DurenbergerU.S. Senator · MinnesotaParty: Republicanlast term ended 1995
- David DyerU.S. Representative · Missouri's 9th districtParty: Republicanlast term ended 1871
- Davis DimockU.S. Representative · Pennsylvania's 17th districtParty: Democraticlast term ended 1843
- Denis DriscollU.S. Representative · Pennsylvania's 20th districtParty: Democraticlast term ended 1937
- Dennis DeConciniU.S. Senator · ArizonaParty: Democraticlast term ended 1995
- Dennis DonovanU.S. Representative · Ohio's 5th districtParty: Democraticlast term ended 1895
- Dominick DanielsU.S. Representative · New Jersey's 14th districtParty: Democraticlast term ended 1977
- Donald DobbinsU.S. Representative · Illinois's 19th districtParty: Democraticlast term ended 1937
- Dow DrukkerU.S. Representative · New Jersey's 7th districtParty: Republicanlast term ended 1919
- Dudley DenisonU.S. Representative · Vermont's 2nd districtParty: Republicanlast term ended 1879
- Dudley DoolittleU.S. Representative · Kansas's 4th districtParty: Democraticlast term ended 1919
- Ebenezer DumontU.S. Representative · Indiana's 6th districtParty: Republicanlast term ended 1867
- Edmund DarganU.S. Representative · Alabama's 1st districtParty: Democraticlast term ended 1847
- Edmund DeberryU.S. Representative · North Carolina's 3rd districtParty: Whiglast term ended 1851
- Edmund DriggsU.S. Representative · New York's 3rd districtParty: Democraticlast term ended 1901
- Edward DarlingtonU.S. Representative · Pennsylvania's 4th districtParty: Anti Masoniclast term ended 1839
- Edward DaviesU.S. Representative · Pennsylvania's 4th districtParty: Anti Masoniclast term ended 1841
- Edward DegenerU.S. Representative · Texas's 4th districtParty: Republicanlast term ended 1871
- Edward deGraffenriedU.S. Representative · Alabama's 6th districtParty: Democraticlast term ended 1953
- Edward DenisonU.S. Representative · Illinois's 25th districtParty: Republicanlast term ended 1931
- Edward DerwinskiU.S. Representative · Illinois's 4th districtParty: Republicanlast term ended 1983
- Edward DevittU.S. Representative · Minnesota's 4th districtParty: Republicanlast term ended 1949
- Edward DickinsonU.S. Representative · Massachusetts's 10th districtParty: Whiglast term ended 1855
- Edward DickinsonU.S. Representative · Ohio's 9th districtParty: Democraticlast term ended 1871
- Edward DoddU.S. Representative · New York's 15th districtParty: Republicanlast term ended 1859
- Edward DowseU.S. Representative · Massachusetts's 13th districtParty: Republicanlast term ended 1821
- Edward DudleyU.S. Representative · North Carolina's 5th districtParty: Jacksonlast term ended 1831
- Edward DunphyU.S. Representative · New York's 8th districtParty: Democraticlast term ended 1895
- Edwin DenbyU.S. Representative · Michigan's 1st districtParty: Republicanlast term ended 1911
- Edwin DooleyU.S. Representative · New York's 26th districtParty: Republicanlast term ended 1963
- Edwin DurnoU.S. Representative · Oregon's 4th districtParty: Republicanlast term ended 1963
- Elias DeemerU.S. Representative · Pennsylvania's 15th districtParty: Republicanlast term ended 1907
- Elizabeth DoleU.S. Senator · North CarolinaParty: Republicanlast term ended 2009
- Emilio DaddarioU.S. Representative · Connecticut's 1st districtParty: Democraticlast term ended 1971
- Emily DouglasU.S. Representative · IllinoisParty: Democraticlast term ended 1947
- Everett DirksenU.S. Senator · IllinoisParty: Republicanlast term ended 1969
- Ewin DavisU.S. Representative · Tennessee's 5th districtParty: Democraticlast term ended 1933
- Ezra DarbyU.S. Representative · New JerseyParty: Republicanlast term ended 1809
- Ezra DeanU.S. Representative · Ohio's 18th districtParty: Democraticlast term ended 1845
- Federico DegetauU.S. Representative · PRParty: Republicanlast term ended 1905
- Finis DowningU.S. Representative · Illinois's 16th districtParty: Democraticlast term ended 1897
- Florence DwyerU.S. Representative · New Jersey's 12th districtParty: Republicanlast term ended 1973
- Forrest DonnellU.S. Senator · MissouriParty: Republicanlast term ended 1951
- Francis DoddsU.S. Representative · Michigan's 11th districtParty: Republicanlast term ended 1913
- Francis DornU.S. Representative · New York's 12th districtParty: Republicanlast term ended 1961
- Francis DuffyU.S. Senator · WisconsinParty: Democraticlast term ended 1939
- Francisco DelgadoU.S. Representative · PIParty: not on filelast term ended 1937
- Frank DenholmU.S. Representative · South Dakota's 1st districtParty: Democraticlast term ended 1975
- Frank DicksonU.S. Representative · Illinois's 23rd districtParty: Republicanlast term ended 1907
- Frank DoremusU.S. Representative · Michigan's 1st districtParty: Democraticlast term ended 1921
- Frank DorseyU.S. Representative · Pennsylvania's 5th districtParty: Democraticlast term ended 1939
- Franklin DavenportU.S. Representative · New Jersey's 5th districtParty: Federalistlast term ended 1801
- Franklin DershemU.S. Representative · Pennsylvania's 17th districtParty: Democraticlast term ended 1915
- Fred DouglasU.S. Representative · New York's 33rd districtParty: Republicanlast term ended 1945
- Fred DuboisU.S. Senator · IdahoParty: Democraticlast term ended 1907
- Frederick DallingerU.S. Representative · Massachusetts's 8th districtParty: Republicanlast term ended 1933
- Frederick DavenportU.S. Representative · New York's 33rd districtParty: Republicanlast term ended 1933
- Frederick DeitrickU.S. Representative · Massachusetts's 8th districtParty: Democraticlast term ended 1915
- Frederick DominickU.S. Representative · South Carolina's 3rd districtParty: Democraticlast term ended 1933
- Félix DávilaU.S. Representative · PRParty: Unionistlast term ended 1933
- Gabriel DuvallU.S. Representative · Maryland's 2nd districtParty: Republicanlast term ended 1797
- Garrett DavisU.S. Senator · KentuckyParty: Democraticlast term ended 1873
- Geoff DavisU.S. Representative · Kentucky's 4th districtParty: Republicanlast term ended 2012
- George DallasU.S. Senator · PennsylvaniaParty: Jacksonlast term ended 1833
- George DanielsonU.S. Representative · California's 30th districtParty: Democraticlast term ended 1983
- George DardenU.S. Representative · Georgia's 7th districtParty: Democraticlast term ended 1995
- George DarganU.S. Representative · South Carolina's 6th districtParty: Democraticlast term ended 1891
- George DarrowU.S. Representative · Pennsylvania's 7th districtParty: Republicanlast term ended 1941
- George DavisU.S. Representative · Massachusetts's 6th districtParty: Whiglast term ended 1853
- George DavisU.S. Representative · Illinois's 3rd districtParty: Republicanlast term ended 1885
- George DavisonU.S. Representative · Kentucky's 8th districtParty: Republicanlast term ended 1899
- George DenisonU.S. Representative · Pennsylvania's 10th districtParty: Republicanlast term ended 1823
- George DennisU.S. Senator · MarylandParty: Democraticlast term ended 1879
- George DentU.S. Representative · Maryland's 1st districtParty: Federalistlast term ended 1801
- George DentonU.S. Representative · Indiana's 1st districtParty: Democraticlast term ended 1919
- George DibrellU.S. Representative · Tennessee's 3rd districtParty: Democraticlast term ended 1885
- George DonderoU.S. Representative · Michigan's 18th districtParty: Republicanlast term ended 1957
- George DorseyU.S. Representative · Nebraska's 3rd districtParty: Republicanlast term ended 1891
- George DromgooleU.S. Representative · Virginia's 2nd districtParty: Democraticlast term ended 1849
- George DunlapU.S. Representative · Kentucky's 6th districtParty: Unionistlast term ended 1863
- George DunnU.S. Representative · Indiana's 4th districtParty: Whiglast term ended 1839
- George DunnU.S. Representative · Indiana's 3rd districtParty: Ind. Republican-Democratlast term ended 1857
- George DurandU.S. Representative · Michigan's 6th districtParty: Democraticlast term ended 1877
- George DurganU.S. Representative · Indiana's 2nd districtParty: Democraticlast term ended 1935
- George La DowU.S. Representative · Oregon's 1st districtParty: Democraticlast term ended 1877
- Gerrit DiekemaU.S. Representative · Michigan's 5th districtParty: Republicanlast term ended 1911
- Gilbert DeanU.S. Representative · New York's 12th districtParty: Democraticlast term ended 1855
- Glenn DavisU.S. Representative · Wisconsin's 9th districtParty: Republicanlast term ended 1975
- Grenville DodgeU.S. Representative · Iowa's 5th districtParty: Republicanlast term ended 1869
- Harmar DennyU.S. Representative · Pennsylvania's 22nd districtParty: Anti Masoniclast term ended 1837
- Harmar DennyU.S. Representative · Pennsylvania's 29th districtParty: Republicanlast term ended 1953
- Harold DaubU.S. Representative · Nebraska's 2nd districtParty: Republicanlast term ended 1989
- Harold DonohueU.S. Representative · Massachusetts's 3rd districtParty: Democraticlast term ended 1975
- Harry DaleU.S. Representative · New York's 4th districtParty: Democraticlast term ended 1919
- Harry DarbyU.S. Senator · KansasParty: Republicanlast term ended 1950
- Harry DavenportU.S. Representative · Pennsylvania's 29th districtParty: Democraticlast term ended 1951
- Helen DouglasU.S. Representative · California's 14th districtParty: Democraticlast term ended 1951
- Henry DanforthU.S. Representative · New York's 39th districtParty: Republicanlast term ended 1917
- Henry DanielU.S. Representative · Kentucky's 1st districtParty: Jacksonlast term ended 1833
- Henry DavisU.S. Representative · Maryland's 3rd districtParty: Unconditional Unionistlast term ended 1865
- Henry DavisU.S. Senator · West VirginiaParty: Democraticlast term ended 1883
- Henry DawesU.S. Senator · MassachusettsParty: Republicanlast term ended 1893
- Henry DearbornU.S. Representative · Massachusetts's 12th districtParty: Republicanlast term ended 1797
- Henry DearbornU.S. Representative · Massachusetts's 10th districtParty: Anti Jacksonianlast term ended 1833
- Henry DemingU.S. Representative · Connecticut's 1st districtParty: Republicanlast term ended 1867
- Henry DickeyU.S. Representative · Ohio's 11th districtParty: Democraticlast term ended 1881
- Henry DixonU.S. Representative · Utah's 1st districtParty: Republicanlast term ended 1961
- Henry DodgeU.S. Senator · WisconsinParty: Democraticlast term ended 1857
- Henry DupréU.S. Representative · Louisiana's 2nd districtParty: Democraticlast term ended 1925
- Henry DwightU.S. Representative · Massachusetts's 9th districtParty: Adamslast term ended 1831
- Henry DworshakU.S. Senator · IdahoParty: Republicanlast term ended 1962
- Herbert DraneU.S. Representative · Florida's 1st districtParty: Democraticlast term ended 1933
- Herman DahleU.S. Representative · Wisconsin's 2nd districtParty: Republicanlast term ended 1903
- Horace DavisU.S. Representative · California's 1st districtParty: Republicanlast term ended 1881
- Huey DeckardU.S. Representative · Indiana's 8th districtParty: Republicanlast term ended 1983
- Hugh DinsmoreU.S. Representative · Arkansas's 3rd districtParty: Democraticlast term ended 1905
- Ignatius DonnellyU.S. Representative · Minnesota's 2nd districtParty: Republicanlast term ended 1869
- Ira DavenportU.S. Representative · New York's 29th districtParty: Republicanlast term ended 1889
- Ira DrewU.S. Representative · Pennsylvania's 7th districtParty: Democraticlast term ended 1939
- Irving DrewU.S. Senator · New HampshireParty: Republicanlast term ended 1918
- Irwin DavidsonU.S. Representative · New York's 20th districtParty: Democraticlast term ended 1957
- Isaac DarlingtonU.S. Representative · Pennsylvania's 2nd districtParty: Federalistlast term ended 1819
- Isaac DelaplaineU.S. Representative · New York's 8th districtParty: Democraticlast term ended 1863
- Isaac DoutrichU.S. Representative · Pennsylvania's 19th districtParty: Republicanlast term ended 1937
- Isaac DuvalU.S. Representative · West Virginia's 1st districtParty: Republicanlast term ended 1871
- Isidore DollingerU.S. Representative · New York's 23rd districtParty: Democraticlast term ended 1961
- Jack DavisU.S. Representative · Illinois's 4th districtParty: Republicanlast term ended 1989
- Jacob DavisU.S. Representative · Illinois's 5th districtParty: Democraticlast term ended 1857
- Jacob DavisU.S. Representative · Ohio's 6th districtParty: Democraticlast term ended 1943
- James DaughertyU.S. Representative · Missouri's 15th districtParty: Democraticlast term ended 1913
- James DavenportU.S. Representative · ConnecticutParty: Federalistlast term ended 1799
- James DavenportU.S. Representative · Oklahoma's 1st districtParty: Democraticlast term ended 1917
- James DavidsonU.S. Representative · Wisconsin's 6th districtParty: Republicanlast term ended 1919
- James DavisU.S. Representative · TexasParty: Democraticlast term ended 1917
- James DavisU.S. Senator · PennsylvaniaParty: Republicanlast term ended 1945
- James DavisU.S. Representative · Georgia's 5th districtParty: Democraticlast term ended 1963
- James DavisU.S. Representative · Florida's 11th districtParty: Democraticlast term ended 2007
- James DelaneyU.S. Representative · New York's 9th districtParty: Democraticlast term ended 1979
- James DelletU.S. Representative · Alabama's 1st districtParty: Whiglast term ended 1845
- James DennyU.S. Representative · Maryland's 4th districtParty: Democraticlast term ended 1905
- James DenverU.S. Representative · CaliforniaParty: Democraticlast term ended 1857
- James DevereuxU.S. Representative · Maryland's 2nd districtParty: Republicanlast term ended 1959
- James DixonU.S. Senator · ConnecticutParty: Republicanlast term ended 1869
- James DobbinU.S. Representative · North Carolina's 5th districtParty: Democraticlast term ended 1847
- James DolliverU.S. Representative · Iowa's 6th districtParty: Republicanlast term ended 1957
- James DomengeauxU.S. Representative · Louisiana's 3rd districtParty: Democraticlast term ended 1949
- James DonovanU.S. Representative · New York's 18th districtParty: Democraticlast term ended 1957
- James DoolittleU.S. Senator · WisconsinParty: Republicanlast term ended 1869
- James DotyU.S. Representative · Wisconsin's 3rd districtParty: Ind. Democratlast term ended 1853
- James DowdellU.S. Representative · Alabama's 3rd districtParty: Democraticlast term ended 1859
- James DuffU.S. Senator · PennsylvaniaParty: Republicanlast term ended 1957
- James DuffyU.S. Representative · New York's 38th districtParty: Democraticlast term ended 1937
- James DunbarU.S. Representative · Indiana's 3rd districtParty: Republicanlast term ended 1931
- James DuncanU.S. Representative · PennsylvaniaParty: not on filelast term ended 1823
- James DuncanU.S. Representative · Massachusetts's 3rd districtParty: Whiglast term ended 1853
- James DunganU.S. Representative · Ohio's 13th districtParty: Democraticlast term ended 1893
- James DunnU.S. Representative · Michigan's 6th districtParty: Republicanlast term ended 1983
- Jay DickeyU.S. Representative · Arkansas's 4th districtParty: Republicanlast term ended 2001
- Jean DestréhanU.S. Senator · LouisianaParty: Unknownlast term ended 1813
- Jeff DavisU.S. Senator · ArkansasParty: Democraticlast term ended 1913
- Jeff DenhamU.S. Representative · California's 10th districtParty: Republicanlast term ended 2019
- Jeff DuncanU.S. Representative · South Carolina's 3rd districtParty: Republicanlast term ended 2025
- Jefferson DavisU.S. Senator · MississippiParty: Democraticlast term ended 1861
- Jennifer DunnU.S. Representative · Washington's 8th districtParty: Republicanlast term ended 2005
- Jeremiah DentonU.S. Senator · AlabamaParty: Republicanlast term ended 1987
- Jeremiah DonovanU.S. Representative · Connecticut's 4th districtParty: Democraticlast term ended 1915
- Jeremiah DwightU.S. Representative · New York's 28th districtParty: Republicanlast term ended 1883
- Jerome DonovanU.S. Representative · New York's 21st districtParty: Democraticlast term ended 1921
- Jesse DickeyU.S. Representative · Pennsylvania's 7th districtParty: Whiglast term ended 1851
- Jim DeMintU.S. Senator · South CarolinaParty: Republicanlast term ended 2013
- Jo Ann DavisU.S. Representative · Virginia's 1st districtParty: Republicanlast term ended 2007
- Job DurfeeU.S. Representative · Rhode IslandParty: Republicanlast term ended 1825
- Joe DonnellyU.S. Senator · IndianaParty: Democraticlast term ended 2019
- Joel DannerU.S. Representative · Pennsylvania's 15th districtParty: Democraticlast term ended 1851
- John D. DingellU.S. Representative · Michigan's 12th districtParty: Democraticlast term ended 2015
- John DalyU.S. Representative · Pennsylvania's 4th districtParty: Democraticlast term ended 1941
- John DalzellU.S. Representative · Pennsylvania's 30th districtParty: Republicanlast term ended 1913
- John DanaherU.S. Senator · ConnecticutParty: Republicanlast term ended 1945
- John DanforthU.S. Senator · MissouriParty: Republicanlast term ended 1995
- John DanielU.S. Representative · North Carolina's 6th districtParty: Democraticlast term ended 1853
- John DanielU.S. Senator · VirginiaParty: Democraticlast term ended 1910
- John DarbyU.S. Representative · Missouri's 1st districtParty: Whiglast term ended 1853
- John DavenportU.S. Representative · ConnecticutParty: Federalistlast term ended 1817
- John DavenportU.S. Representative · Ohio's 10th districtParty: Adamslast term ended 1829
- John DaviesU.S. Representative · New York's 35th districtParty: Democraticlast term ended 1951
- John DavisU.S. Representative · Pennsylvania's 6th districtParty: Democraticlast term ended 1841
- John DavisU.S. Representative · Indiana's 6th districtParty: Democraticlast term ended 1847
- John DavisU.S. Senator · MassachusettsParty: Whiglast term ended 1853
- John DavisU.S. Representative · Indiana's 7th districtParty: Anti-Lecompton Democratlast term ended 1861
- John DavisU.S. Representative · West Virginia's 1st districtParty: Ind. Democratlast term ended 1875
- John DavisU.S. Representative · Kansas's 5th districtParty: Populistlast term ended 1895
- John DavisU.S. Representative · West Virginia's 1st districtParty: Democraticlast term ended 1915
- John DavisU.S. Representative · Georgia's 7th districtParty: Democraticlast term ended 1975
- John DavyU.S. Representative · New York's 30th districtParty: Republicanlast term ended 1877
- John DawsonU.S. Representative · Virginia's 11th districtParty: Republicanlast term ended 1815
- John DawsonU.S. Representative · LouisianaParty: Democraticlast term ended 1847
- John DawsonU.S. Representative · Pennsylvania's 21st districtParty: Democraticlast term ended 1867
- John DelaneyU.S. Representative · New York's 7th districtParty: Democraticlast term ended 1949
- John DellenbackU.S. Representative · Oregon's 4th districtParty: Republicanlast term ended 1975
- John DempseyU.S. Representative · New MexicoParty: Democraticlast term ended 1959
- John DennisU.S. Representative · Maryland's 8th districtParty: Federalistlast term ended 1805
- John DennisU.S. Representative · Maryland's 1st districtParty: Whiglast term ended 1841
- John DentU.S. Representative · Pennsylvania's 21st districtParty: Democraticlast term ended 1979
- John DeweeseU.S. Representative · North Carolina's 4th districtParty: Republicanlast term ended 1871
- John DezendorfU.S. Representative · Virginia's 2nd districtParty: Republicanlast term ended 1883
- John DickU.S. Representative · PennsylvaniaParty: Republicanlast term ended 1861
- John DickeyU.S. Representative · Pennsylvania's 20th districtParty: Whiglast term ended 1849
- John DickinsonU.S. Representative · New York's 9th districtParty: Adamslast term ended 1831
- John DicksonU.S. Representative · New York's 26th districtParty: Anti Masoniclast term ended 1835
- John DingellU.S. Representative · Michigan's 15th districtParty: Democraticlast term ended 1957
- John DitterU.S. Representative · Pennsylvania's 17th districtParty: Republicanlast term ended 1945
- John DixU.S. Senator · New YorkParty: Democraticlast term ended 1849
- John DockweilerU.S. Representative · California's 16th districtParty: Democraticlast term ended 1939
- John DoolittleU.S. Representative · California's 4th districtParty: Republicanlast term ended 2009
- John DorseyU.S. Representative · Kentucky's 2nd districtParty: Democraticlast term ended 1931
- John DoughertyU.S. Representative · Missouri's 3rd districtParty: Democraticlast term ended 1905
- John DouglassU.S. Representative · Massachusetts's 11th districtParty: Democraticlast term ended 1935
- John DowU.S. Representative · New York's 27th districtParty: Democraticlast term ended 1973
- John DowdyU.S. Representative · Texas's 2nd districtParty: Democraticlast term ended 1973
- John DrakeU.S. Representative · New York's 15th districtParty: Republicanlast term ended 1819
- John DriggsU.S. Representative · Michigan's 6th districtParty: Republicanlast term ended 1869
- John DrydenU.S. Senator · New JerseyParty: Republicanlast term ended 1907
- John DullesU.S. Senator · New YorkParty: Republicanlast term ended 1949
- John DuncanU.S. Representative · Tennessee's 2nd districtParty: Republicanlast term ended 1988
- John DunnU.S. Representative · New Jersey's 8th districtParty: Democraticlast term ended 1895
- John DurkinU.S. Senator · New HampshireParty: Democraticlast term ended 1980
- John DwightU.S. Representative · New York's 30th districtParty: Republicanlast term ended 1913
- John K. DelaneyU.S. Representative · Maryland's 6th districtParty: Democraticlast term ended 2019
- John S. DuarteU.S. Representative · California's 13th districtParty: Republicanlast term ended 2025
- John Van DykeU.S. Representative · New Jersey's 4th districtParty: Whiglast term ended 1851
- Jonathan DaytonU.S. Senator · New JerseyParty: Federalistlast term ended 1805
- Jonathan DolliverU.S. Senator · IowaParty: Republicanlast term ended 1910
- Jorge Córdova DíazU.S. Representative · PRParty: New Progressivelast term ended 1973
- Joseph DaneU.S. Representative · Maine's 1st districtParty: Federalistlast term ended 1823
- Joseph DavisU.S. Representative · North Carolina's 4th districtParty: Democraticlast term ended 1881
- Joseph DealU.S. Representative · Virginia's 2nd districtParty: Democraticlast term ended 1929
- Joseph DefreesU.S. Representative · Indiana's 10th districtParty: Republicanlast term ended 1867
- Joseph DeshaU.S. Representative · Kentucky's 4th districtParty: Republicanlast term ended 1819
- Joseph DicksonU.S. Representative · North Carolina's 1st districtParty: Federalistlast term ended 1801
- Joseph DioGuardiU.S. Representative · New York's 20th districtParty: Republicanlast term ended 1989
- Joseph DixonU.S. Representative · North Carolina's 2nd districtParty: Republicanlast term ended 1871
- Joseph DixonU.S. Senator · MontanaParty: Republicanlast term ended 1913
- Joseph DixonU.S. Representative · Ohio's 1st districtParty: Democraticlast term ended 1939
- Joseph DolphU.S. Senator · OregonParty: Republicanlast term ended 1895
- Joseph DonleyU.S. Representative · Pennsylvania's 24th districtParty: Republicanlast term ended 1871
- Joseph DraperU.S. Representative · Virginia's 22nd districtParty: Jacksonlast term ended 1833
- Joseph DuncanU.S. Representative · Illinois's 3rd districtParty: Jacksonlast term ended 1835
- Josiah DeanU.S. Representative · Massachusetts's 9th districtParty: Republicanlast term ended 1809
- Judah DanaU.S. Senator · MaineParty: Jacksonlast term ended 1837
- Julian DixonU.S. Representative · California's 32nd districtParty: Democraticlast term ended 2001
- Justin DwinellU.S. Representative · New York's 22nd districtParty: not on filelast term ended 1825
- Kathleen DahlkemperU.S. Representative · Pennsylvania's 3rd districtParty: Democraticlast term ended 2011
- Kenneth DyalU.S. Representative · California's 33rd districtParty: Democraticlast term ended 1967
- LaVern DilwegU.S. Representative · Wisconsin's 8th districtParty: Democraticlast term ended 1945
- Lawrence DeNardisU.S. Representative · Connecticut's 3rd districtParty: Republicanlast term ended 1983
- Le DownsU.S. Representative · Connecticut's 4th districtParty: Democraticlast term ended 1943
- Leonidas DyerU.S. Representative · Missouri's 12th districtParty: Republicanlast term ended 1933
- Lester DickinsonU.S. Senator · IowaParty: Republicanlast term ended 1937
- Lewis DewartU.S. Representative · Pennsylvania's 9th districtParty: Jacksonlast term ended 1833
- Lewis DouglasU.S. Representative · ArizonaParty: Democraticlast term ended 1933
- Lincoln DavisU.S. Representative · Tennessee's 4th districtParty: Democraticlast term ended 2011
- Lincoln Diaz-BalartU.S. Representative · Florida's 21st districtParty: Republicanlast term ended 2011
- Lincoln DixonU.S. Representative · Indiana's 4th districtParty: Democraticlast term ended 1919
- Lionel Van DeerlinU.S. Representative · California's 42nd districtParty: Democraticlast term ended 1981
- Littleton DennisU.S. Representative · Maryland's 1st districtParty: Anti Jacksonianlast term ended 1835
- Lorenzo DanfordU.S. Representative · Ohio's 16th districtParty: Republicanlast term ended 1901
- Lowndes DavisU.S. Representative · Missouri's 14th districtParty: Democraticlast term ended 1885
- Mahlon DickersonU.S. Senator · New JerseyParty: Jacksonlast term ended 1833
- Marion DanielU.S. Senator · TexasParty: Democraticlast term ended 1957
- Mark DaytonU.S. Senator · MinnesotaParty: Democraticlast term ended 2007
- Mark DunnellU.S. Representative · Minnesota's 1st districtParty: Republicanlast term ended 1891
- Martin DaveyU.S. Representative · Ohio's 14th districtParty: Democraticlast term ended 1929
- Martin DiesU.S. Representative · Texas's 2nd districtParty: Democraticlast term ended 1919
- Martin DiesU.S. Representative · TexasParty: Democraticlast term ended 1959
- Mason DarlingU.S. Representative · WisconsinParty: Democraticlast term ended 1849
- Matthew DenverU.S. Representative · Ohio's 6th districtParty: Democraticlast term ended 1913
- Matthew DunnU.S. Representative · Pennsylvania's 34th districtParty: Democraticlast term ended 1941
- Mendel DavisU.S. Representative · South Carolina's 1st districtParty: Democraticlast term ended 1981
- Mervyn DymallyU.S. Representative · California's 31st districtParty: Democraticlast term ended 1993
- Michael DeWineU.S. Senator · OhioParty: Republicanlast term ended 2007
- Michael DonohoeU.S. Representative · Pennsylvania's 5th districtParty: Democraticlast term ended 1915
- Michael DriscollU.S. Representative · New York's 29th districtParty: Republicanlast term ended 1913
- Michael F. DoyleU.S. Representative · Pennsylvania's 18th districtParty: Democraticlast term ended 2022
- Milo DimmickU.S. Representative · Pennsylvania's 10th districtParty: Democraticlast term ended 1853
- Milton DanielsU.S. Representative · California's 8th districtParty: Republicanlast term ended 1905
- Milton DurhamU.S. Representative · Kentucky's 8th districtParty: Democraticlast term ended 1879
- Nathan DealU.S. Representative · Georgia's 9th districtParty: Republicanlast term ended 2010
- Nathan DixonU.S. Senator · Rhode IslandParty: Whiglast term ended 1843
- Nathan DixonU.S. Representative · Rhode Island's 2nd districtParty: Republicanlast term ended 1871
- Nathan DixonU.S. Senator · Rhode IslandParty: Republicanlast term ended 1895
- Nathaniel DeeringU.S. Representative · Iowa's 4th districtParty: Republicanlast term ended 1883
- Nathaniel DialU.S. Senator · South CarolinaParty: Democraticlast term ended 1925
- Nathaniel DurfeeU.S. Representative · Rhode Island's 1st districtParty: Republicanlast term ended 1859
- Nelson DingleyU.S. Representative · MaineParty: Republicanlast term ended 1901
- Nicholas DoeU.S. Representative · New York's 11th districtParty: Whiglast term ended 1841
- Nicholas Van DykeU.S. Senator · DelawareParty: Adamslast term ended 1827
- Noah DavisU.S. Representative · New York's 28th districtParty: Republicanlast term ended 1871
- Norman D. DicksU.S. Representative · Washington's 6th districtParty: Democraticlast term ended 2013
- Norman D’AmoursU.S. Representative · New Hampshire's 1st districtParty: Democraticlast term ended 1985
- Oliver DickeyU.S. Representative · Pennsylvania's 9th districtParty: Republicanlast term ended 1873
- Oliver DockeryU.S. Representative · North Carolina's 3rd districtParty: Republicanlast term ended 1871
- Ozro DoddsU.S. Representative · Ohio's 1st districtParty: Democraticlast term ended 1873
- Pat DannerU.S. Representative · Missouri's 6th districtParty: Democraticlast term ended 2001
- Patrick DrewryU.S. Representative · Virginia's 4th districtParty: Democraticlast term ended 1949
- Paul DagueU.S. Representative · Pennsylvania's 9th districtParty: Republicanlast term ended 1967
- Paul DillinghamU.S. Representative · Vermont's 4th districtParty: Democraticlast term ended 1847
- Paul DouglasU.S. Senator · IllinoisParty: Democraticlast term ended 1967
- Perl DeckerU.S. Representative · Missouri's 15th districtParty: Democraticlast term ended 1919
- Pete DomeniciU.S. Senator · New MexicoParty: Republicanlast term ended 2009
- Peter A. DeFazioU.S. Representative · Oregon's 4th districtParty: Democraticlast term ended 2023
- Peter DenoyellesU.S. Representative · New York's 3rd districtParty: Republicanlast term ended 1815
- Peter DeusterU.S. Representative · Wisconsin's 4th districtParty: Democraticlast term ended 1885
- Peter DeutschU.S. Representative · Florida's 20th districtParty: Democraticlast term ended 2005
- Peter DominickU.S. Senator · ColoradoParty: Republicanlast term ended 1975
- Peter DoolingU.S. Representative · New York's 15th districtParty: Democraticlast term ended 1921
- Peter DoxU.S. Representative · Alabama's 5th districtParty: Democraticlast term ended 1873
- Philemon DickersonU.S. Representative · New JerseyParty: Democraticlast term ended 1841
- Philemon DickinsonU.S. Senator · New JerseyParty: Pro-Administrationlast term ended 1793
- Philip DoddridgeU.S. Representative · Virginia's 18th districtParty: not on filelast term ended 1833
- Philip DugroU.S. Representative · New York's 7th districtParty: Democraticlast term ended 1883
- Poindexter DunnU.S. Representative · Arkansas's 1st districtParty: Democraticlast term ended 1889
- Porter DaleU.S. Senator · VermontParty: Republicanlast term ended 1933
- Ralph DaughtonU.S. Representative · Virginia's 2nd districtParty: Democraticlast term ended 1947
- Ransom DunhamU.S. Representative · Illinois's 1st districtParty: Republicanlast term ended 1889
- Reuben DavisU.S. Representative · Mississippi's 2nd districtParty: Democraticlast term ended 1861
- Richard DavisU.S. Representative · New York's 8th districtParty: Democraticlast term ended 1845
- Richard DonnellU.S. Representative · North Carolina's 8th districtParty: Whiglast term ended 1849
- Richard DukeU.S. Representative · Virginia's 5th districtParty: Democraticlast term ended 1873
- Richard DuncanU.S. Representative · Missouri's 3rd districtParty: Democraticlast term ended 1943
- Robert DanielU.S. Representative · Virginia's 4th districtParty: Republicanlast term ended 1983
- Robert DaveyU.S. Representative · Louisiana's 2nd districtParty: Democraticlast term ended 1909
- Robert DavidsonU.S. Representative · Florida's 1st districtParty: Democraticlast term ended 1891
- Robert DavisU.S. Representative · Massachusetts's 1st districtParty: Republicanlast term ended 1889
- Robert DavisU.S. Representative · Florida's 2nd districtParty: Democraticlast term ended 1905
- Robert DavisU.S. Representative · Pennsylvania's 6th districtParty: Republicanlast term ended 1933
- Robert DavisU.S. Representative · Michigan's 11th districtParty: Republicanlast term ended 1993
- Robert DenneyU.S. Representative · Nebraska's 1st districtParty: Republicanlast term ended 1971
- Robert DeshaU.S. Representative · Tennessee's 5th districtParty: Jacksonlast term ended 1831
- Robert DifenderferU.S. Representative · Pennsylvania's 8th districtParty: Democraticlast term ended 1915
- Robert DoanU.S. Representative · Ohio's 10th districtParty: Republicanlast term ended 1893
- Robert DoleU.S. Senator · KansasParty: Republicanlast term ended 1996
- Robert DornanU.S. Representative · California's 46th districtParty: Republicanlast term ended 1997
- Robert DoughtonU.S. Representative · North Carolina's 9th districtParty: Democraticlast term ended 1953
- Robert DrinanU.S. Representative · Massachusetts's 4th districtParty: Democraticlast term ended 1981
- Robert DuncanU.S. Representative · Oregon's 3rd districtParty: Democraticlast term ended 1981
- Robert DunlapU.S. Representative · Maine's 2nd districtParty: Democraticlast term ended 1847
- Robert J. DoldU.S. Representative · Illinois's 10th districtParty: Republicanlast term ended 2017
- Rodney DavisU.S. Representative · Illinois's 13th districtParty: Republicanlast term ended 2023
- Rodolphus DickinsonU.S. Representative · Ohio's 6th districtParty: Democraticlast term ended 1851
- Rodolphus DuellU.S. Representative · New York's 24th districtParty: Republicanlast term ended 1875
- Roger DavisU.S. Representative · Pennsylvania's 2nd districtParty: Republicanlast term ended 1815
- Rollin DaggettU.S. Representative · NevadaParty: Republicanlast term ended 1881
- Ron DeSantisU.S. Representative · Florida's 6th districtParty: Republicanlast term ended 2018
- Ronald DellumsU.S. Representative · California's 9th districtParty: Democraticlast term ended 1998
- Rowland DayU.S. Representative · New York's 24th districtParty: Jacksonlast term ended 1835
- Royden DysonU.S. Representative · Maryland's 1st districtParty: Democraticlast term ended 1991
- Rufus DawesU.S. Representative · Ohio's 15th districtParty: Republicanlast term ended 1883
- Samuel DailyU.S. Representative · NebraskaParty: Republicanlast term ended 1865
- Samuel DanaU.S. Representative · Massachusetts's 4th districtParty: Republicanlast term ended 1815
- Samuel DanaU.S. Senator · ConnecticutParty: Federalistlast term ended 1821
- Samuel DavenportU.S. Representative · PennsylvaniaParty: Republicanlast term ended 1901
- Samuel DavisU.S. Representative · Massachusetts's 16th districtParty: Federalistlast term ended 1815
- Samuel DevineU.S. Representative · Ohio's 12th districtParty: Republicanlast term ended 1981
- Samuel DexterU.S. Senator · MassachusettsParty: Federalistlast term ended 1801
- Samuel DibbleU.S. Representative · South Carolina's 1st districtParty: Democraticlast term ended 1891
- Samuel DickU.S. Representative · Pennsylvania's 26th districtParty: Republicanlast term ended 1881
- Samuel DickensU.S. Representative · North Carolina's 8th districtParty: Republicanlast term ended 1817
- Samuel DicksonU.S. Representative · New York's 14th districtParty: Ind. Republican-Democratlast term ended 1857
- Samuel DicksteinU.S. Representative · New York's 19th districtParty: Democraticlast term ended 1947
- Samuel DinsmoorU.S. Representative · New HampshireParty: Republicanlast term ended 1813
- Samuel DobbinsU.S. Representative · New Jersey's 2nd districtParty: Republicanlast term ended 1877
- Sean P. DuffyU.S. Representative · Wisconsin's 7th districtParty: Republicanlast term ended 2019
- Sheridan DowneyU.S. Senator · CaliforniaParty: Democraticlast term ended 1950
- Sidney DeanU.S. Representative · Connecticut's 3rd districtParty: Republicanlast term ended 1859
- Smedley DarlingtonU.S. Representative · Pennsylvania's 6th districtParty: Republicanlast term ended 1891
- Solomon DownsU.S. Senator · LouisianaParty: Democraticlast term ended 1853
- Solomon DresserU.S. Representative · Pennsylvania's 21st districtParty: Republicanlast term ended 1907
- Stanley DavenportU.S. Representative · Pennsylvania's 12th districtParty: Democraticlast term ended 1901
- Stanley DentU.S. Representative · Alabama's 2nd districtParty: Democraticlast term ended 1921
- Stephen DayU.S. Representative · IllinoisParty: Republicanlast term ended 1945
- Stephen DempseyU.S. Representative · New York's 40th districtParty: Republicanlast term ended 1931
- Stephen DorseyU.S. Senator · ArkansasParty: Republicanlast term ended 1879
- Stephen DouglasU.S. Senator · IllinoisParty: Democraticlast term ended 1861
- Stephen DowneyU.S. Representative · WyomingParty: Republicanlast term ended 1881
- Steve DriehausU.S. Representative · Ohio's 1st districtParty: Democraticlast term ended 2011
- Steven DerounianU.S. Representative · New York's 3rd districtParty: Republicanlast term ended 1965
- Susan A. DavisU.S. Representative · California's 53rd districtParty: Democraticlast term ended 2021
- Thaddeus DulskiU.S. Representative · New York's 37th districtParty: Democraticlast term ended 1975
- Thelma DrakeU.S. Representative · Virginia's 2nd districtParty: Republicanlast term ended 2009
- Theodore DwightU.S. Representative · ConnecticutParty: Federalistlast term ended 1807
- Theodore E. DeutchU.S. Representative · Florida's 22nd districtParty: Democraticlast term ended 2022
- Thomas DaleU.S. Representative · Pennsylvania's 10th districtParty: Republicanlast term ended 1907
- Thomas DaschleU.S. Senator · South DakotaParty: Democraticlast term ended 2005
- Thomas DaveeU.S. Representative · Maine's 8th districtParty: Democraticlast term ended 1841
- Thomas DavenportU.S. Representative · Virginia's 6th districtParty: Anti-Jacksonianlast term ended 1835
- Thomas DavidsonU.S. Representative · Louisiana's 3rd districtParty: Democraticlast term ended 1861
- Thomas DavisU.S. Representative · Kentucky's 1st districtParty: Republicanlast term ended 1803
- Thomas DavisU.S. Representative · Rhode Island's 1st districtParty: Democraticlast term ended 1855
- Thomas DavisU.S. Representative · New York's 23rd districtParty: Republicanlast term ended 1867
- Thomas DavisU.S. Representative · West Virginia's 2nd districtParty: Democraticlast term ended 1907
- Thomas DavisU.S. Representative · Virginia's 11th districtParty: Republicanlast term ended 2008
- Thomas DeLayU.S. Representative · Texas's 22nd districtParty: Republicanlast term ended 2006
- Thomas DoddU.S. Senator · ConnecticutParty: Democraticlast term ended 1971
- Thomas DowneyU.S. Representative · New York's 2nd districtParty: Democraticlast term ended 1993
- Thomas DowningU.S. Representative · Virginia's 1st districtParty: Democraticlast term ended 1977
- Thomas DoyleU.S. Representative · Illinois's 4th districtParty: Democraticlast term ended 1931
- Thomas DunnU.S. Representative · New York's 38th districtParty: Republicanlast term ended 1923
- Thomas DwightU.S. Representative · Massachusetts's 5th districtParty: Federalistlast term ended 1805
- Thomas D’AlesandroU.S. Representative · Maryland's 3rd districtParty: Democraticlast term ended 1949
- Timothy DavisU.S. Representative · Iowa's 2nd districtParty: Republicanlast term ended 1859
- Timothy DavisU.S. Representative · Massachusetts's 6th districtParty: Republicanlast term ended 1859
- Timothy DayU.S. Representative · Ohio's 1st districtParty: Ind. Republican-Democratlast term ended 1857
- Tristram DaltonU.S. Senator · MassachusettsParty: Pro-Administrationlast term ended 1791
- Ulysses DoubledayU.S. Representative · New York's 24th districtParty: Jacksonlast term ended 1837
- Val Butler DemingsU.S. Representative · Florida's 10th districtParty: Democraticlast term ended 2023
- Vincent DellayU.S. Representative · New Jersey's 14th districtParty: Democraticlast term ended 1959
- W. DickersonU.S. Representative · Kentucky's 6th districtParty: Democraticlast term ended 1893
- Wall DoxeyU.S. Senator · MississippiParty: Democraticlast term ended 1943
- Walter DennyU.S. Representative · Mississippi's 6th districtParty: Democraticlast term ended 1897
- Warren DaniellU.S. Representative · New Hampshire's 2nd districtParty: Democraticlast term ended 1893
- Warren DavisU.S. Representative · South CarolinaParty: Nullifierlast term ended 1837
- Warren DuffeyU.S. Representative · Ohio's 9th districtParty: Democraticlast term ended 1937
- Wesley DisneyU.S. Representative · Oklahoma's 1st districtParty: Democraticlast term ended 1945
- Wesley D’EwartU.S. Representative · Montana's 2nd districtParty: Republicanlast term ended 1955
- Wilbur DanielU.S. Representative · Virginia's 5th districtParty: Democraticlast term ended 1988
- William DalyU.S. Representative · New Jersey's 7th districtParty: Democraticlast term ended 1901
- William DamrellU.S. Representative · Massachusetts's 3rd districtParty: Republicanlast term ended 1859
- William DannemeyerU.S. Representative · California's 39th districtParty: Republicanlast term ended 1993
- William DarlingU.S. Representative · New York's 9th districtParty: Republicanlast term ended 1867
- William DarlingtonU.S. Representative · Pennsylvania's 2nd districtParty: Republicanlast term ended 1823
- William DavidsonU.S. Representative · North Carolina's 11th districtParty: Federalistlast term ended 1821
- William DavisU.S. Representative · Pennsylvania's 5th districtParty: Republicanlast term ended 1863
- William DawsonU.S. Representative · North Carolina's 8th districtParty: Anti-Administrationlast term ended 1795
- William DawsonU.S. Senator · GeorgiaParty: Whiglast term ended 1855
- William DawsonU.S. Representative · Missouri's 14th districtParty: Democraticlast term ended 1887
- William DawsonU.S. Representative · Utah's 2nd districtParty: Republicanlast term ended 1959
- William DawsonU.S. Representative · Illinois's 1st districtParty: Democraticlast term ended 1971
- William DaytonU.S. Senator · New JerseyParty: Whiglast term ended 1851
- William DeboeU.S. Senator · KentuckyParty: Republicanlast term ended 1903
- William DelahuntU.S. Representative · Massachusetts's 10th districtParty: Democraticlast term ended 2011
- William DenningU.S. Representative · New YorkParty: not on filelast term ended 1811
- William DensonU.S. Representative · Alabama's 7th districtParty: Democraticlast term ended 1895
- William DentU.S. Representative · Georgia's 4th districtParty: Democraticlast term ended 1855
- William DewartU.S. Representative · Pennsylvania's 11th districtParty: Democraticlast term ended 1859
- William DickinsonU.S. Representative · Alabama's 2nd districtParty: Republicanlast term ended 1993
- William DicksonU.S. Representative · Tennessee's 3rd districtParty: Republicanlast term ended 1807
- William DicksonU.S. Representative · Mississippi's 7th districtParty: Democraticlast term ended 1913
- William DieterichU.S. Senator · IllinoisParty: Democraticlast term ended 1939
- William DietzU.S. Representative · New York's 12th districtParty: Jacksonlast term ended 1827
- William DillinghamU.S. Senator · VermontParty: Republicanlast term ended 1923
- William DimmickU.S. Representative · Pennsylvania's 13th districtParty: Democraticlast term ended 1861
- William DixonU.S. Representative · Montana's 1st districtParty: Democraticlast term ended 1893
- William DoanU.S. Representative · Ohio's 5th districtParty: Democraticlast term ended 1843
- William DodgeU.S. Representative · New York's 8th districtParty: Republicanlast term ended 1867
- William DonnanU.S. Representative · Iowa's 3rd districtParty: Republicanlast term ended 1875
- William DoolittleU.S. Representative · WashingtonParty: Republicanlast term ended 1897
- William DornU.S. Representative · South Carolina's 3rd districtParty: Democraticlast term ended 1975
- William DorsheimerU.S. Representative · New York's 7th districtParty: Democraticlast term ended 1885
- William DouglasU.S. Representative · New York's 15th districtParty: Republicanlast term ended 1905
- William DraperU.S. Representative · Massachusetts's 11th districtParty: Republicanlast term ended 1897
- William DraperU.S. Representative · New York's 22nd districtParty: Republicanlast term ended 1913
- William DraytonU.S. Representative · South Carolina's 1st districtParty: Jacksonlast term ended 1833
- William DriverU.S. Representative · Arkansas's 1st districtParty: Democraticlast term ended 1939
- William DuerU.S. Representative · New York's 23rd districtParty: Whiglast term ended 1851
- William DunbarU.S. Representative · Louisiana's 1st districtParty: Democraticlast term ended 1855
- William DuncanU.S. Representative · Kentucky's 7th districtParty: Whiglast term ended 1849
- William DuncanU.S. Representative · Pennsylvania's 19th districtParty: Democraticlast term ended 1885
- William DunlapU.S. Representative · Tennessee's 13th districtParty: Jacksonlast term ended 1837
- William DunnU.S. Representative · Indiana's 3rd districtParty: Republicanlast term ended 1863
- William DuvalU.S. Representative · Kentucky's 10th districtParty: Republicanlast term ended 1815
- Winfield DentonU.S. Representative · Indiana's 8th districtParty: Democraticlast term ended 1967
