# List of Quaker members of the United States Congress

As of 2025, twenty-four Quakers have ever been elected to the United States Congress, the first being John Chew Thomas in 1799. One Quaker currently serves in the Congress.

## Senate

| Senator | Senator | Party | Party | State | Term | Term | Term | Notes |
| Senator | Senator | Party | Party | State | Start | End | Length of service (days) | Notes |
| | William Windom | | Republican | Minnesota | July 15, 1870 | January 22, 1871 | 191 days | Successor qualified |
| | William Windom | | Republican | Minnesota | March 4, 1871 | March 7, 1881 | 10 years, 3 days | Resigned to become United States Secretary of the Treasury |
| | William Windom | | Republican | Minnesota | March 7, 1889 | January 29, 1891 | 1 year, 328 days | Lost re-election |
| | Arthur Capper | | Republican | Kansas | March 4, 1919 | January 3, 1949 | 29 years, 305 days | Retired |
| | Joseph R. Grundy | | Republican | Pennsylvania | December 11, 1929 | December 1, 1930 | 355 days | Lost re-election |
| | Paul Douglas | | Democratic | Illinois | January 3, 1949 | January 3, 1967 | 18 years, 0 days | Lost re-election |
| | Richard Nixon | | Republican | California | December 1, 1950 | January 1, 1953 | 2 years, 31 days | Resigned, having been elected vice president of the United States |
| | John Hickenlooper | | Democratic | Colorado | January 3, 2021 | Incumbent | 4 years, 25 days | |

## House of Representatives

| Senator | Senator | Party | Party | District | Term | Term | Term | Notes |
| Senator | Senator | Party | Party | District | Start | End | Length of service (days) | Notes |
| | John Chew Thomas | | Federalist | MD-02 | March 4, 1799 | March 1, 1801 | 1 year, 362 days | Retired |
| | John Conard | | Democratic- Republican | PA-01 | March 8, 1813 | March 8, 1815 | 2 years, 0 days | Retired |
| | William Darlington | | Democratic- Republican | PA-02 | March 4, 1815 | March 3, 1817 | 1 year, 364 days | |
| | William Darlington | | Democratic- Republican | PA-02 | March 4, 1819 | March 3, 1823 | 3 years, 364 days | |
| | Edward Bates | | National Republican Party | MO-AL | March 4, 1827 | March 3, 1829 | 1 year, 364 days | |
| | John Wethered | | Whig | MD-03 | April 8, 1843 | March 8, 1845 | 1 year, 334 days | |
| | Joseph Grinnell | | Whig | MA-10 | December 7, 1843 | March 8, 1851 | 7 years, 91 days | Retired |
| | Samuel G. Wright | | Whig | NJ-02 | March 4, 1845 | July 30, 1845 | 148 days | Died in office |
| | David P. Holloway | | Opposition | IN-05 | January 4, 1855 | January 3, 1857 | 1 year, 365 days | |
| | William Windom | | Republican | MN-01 | January 4, 1863 | January 4, 1869 | 6 years, 0 days | Retired |
| | Isaac Ambrose Barber | | Republican | MD-01 | January 4, 1897 | January 3, 1899 | 1 year, 364 days | |
| | Thomas S. Butler | | Republican | PA-06 | March 8, 1897 | March 8, 1903 | 31 years, 79 days | Died in office |
| | Thomas S. Butler | | Republican | PA-07 | March 8, 1903 | March 8, 1923 | 31 years, 79 days | Died in office |
| | Thomas S. Butler | | Republican | PA-08 | March 8, 1923 | May 26, 1928 | 31 years, 79 days | Died in office |
| | William W. Cocks | | Republican | NY-01 | March 4, 1905 | March 3, 1911 | 5 years, 364 days | |
| | A. Mitchell Palmer | | Democratic | PA-26 | March 4, 1909 | March 3, 1915 | 5 years, 364 days | Retired to unsuccessfully run for the Senate |
| | Frederick C. Hicks | | Republican | NY-01 | January 4, 1916 | March 3, 1923 | 6 years, 364 days | |
| | Andrew Biemiller | | Democratic | WI-05 | January 3, 1945 | January 3, 1947 | 2 years, 0 days | Lost re-election |
| | Andrew Biemiller | | Democratic | WI-05 | January 3, 1949 | January 3, 1951 | 2 years, 0 days | Lost re-election |
| | Richard Nixon | | Republican | CA-12 | January 3, 1947 | November 30, 1950 | 3 years, 331 days | Resigned on appointment to the Senate |
| | Edward Tylor Miller | | Republican | MD-01 | January 3, 1947 | January 3, 1959 | 12 years, 0 days | Lost re-election |
| | William G. Bray | | Republican | IN-07 | January 3, 1951 | January 3, 1967 | 16 years, 0 days | Lost re-election |
| | William G. Bray | | Republican | IN-06 | January 3, 1967 | January 3, 1975 | 16 years, 0 days | Lost re-election |
| | Edwin B. Forsythe | | Republican | NJ-06 | November 3, 1970 | January 3, 1983 | 13 years, 147 days | Died in office |
| | Edwin B. Forsythe | | Republican | NJ-13 | January 3, 1983 | March 29, 1984 | 13 years, 147 days | Died in office |
| | Rush Holt Jr. | | Democratic | NJ-12 | January 3, 1999 | January 3, 2015 | 16 years, 0 days | Retired |