List of members-elect of the United States House of Representatives who never took their seats
Some people who were elected to the United States House of Representatives died before taking their seats. In other cases, they failed to qualify; were rejected by the House; their credentials were successfully challenged; or they were somehow otherwise unable to become members.
This list only includes people who never served in the House. Re-elected incumbents are not included.
| Member-elect | Party | District | Election date | Congress | Reason for non-seating |
| Augustus F. Allen | Democratic | 44th | Died on January 22, 1875. | ||
| William M. Brown | Republican | 64th | Died on January 31, 1915. | ||
| Andrew J. Campbell | Republican | 54th | Died on December 6, 1894. | ||
| John Cantine | Democratic-Republican | to | 8th | Elected, but declined to take office. | |
| Thomas Child, Jr. | Whig | 34th | Elected, but never took his seat due to illness. | ||
| John Willis Menard | Republican | 40th | Elected, but denied his seat due to election contest. | ||
| P. B. S. Pinchback | Republican | 43rd | Elected, but denied his seat due to election contest. | ||
| James J. Davidson | Republican | 55th | Died on January 2, 1897. | ||
| William Dowse | Federalist | to | 13th | Died on February 18, 1813. | |
| John S. Edwards | Federalist | 13th | Died on February 22, 1813. | ||
| Francis Gehon | Unknown | Iowa Territory | 26th | William W. Chapman's term was extended to October 1840, invalidating Gehon's election. | |
| Richard P. Giles | Democratic | 55th | Died on November 17, 1896. | ||
| James Reed Hallowell | Republican | 46th | Congress refused to seat him because Kansas was not entitled to a fourth representative. | ||
| John W. Head | Democratic | 44th | Died on November 9, 1874. | ||
| Andrew S. Herron | Democratic | 48th | Died on November 27, 1882. | ||
| Henry B. Lee | Democratic-Republican | to | 15th | Died on February 18, 1817. | |
| Samuel Marx | Democratic | 68th | Died on November 30, 1922. | ||
| Garnett McMillan | Democratic | 44th | Died on January 14, 1875. | ||
| Matthew Vincent O'Malley | Democratic | 72nd | Died on May 26, 1931, having never taken the oath of office. | ||
| Samuel Peters | Republican | 43rd | Died before taking office. | ||
| Washington Poe | Whig | 29th | Resigned before taking office. | ||
| B. H. Roberts | Democratic | 56th | Congress refused to seat him because he was a bigamist. | ||
| John Simpson | Democratic-Republican | 13th | Died on January 22, 1813. | ||
| Alexander Smith | Republican | 46th | Died on November 5, 1878. | ||
| Jack Swigert | Republican | 98th | Died on December 27, 1982 | ||
| Thomas Tillotson | Democratic-Republican | to | 7th | Resigned on August 10, 1801, to become Secretary of State of New York. | |
| James Townsend | Federalist | to | 2nd | Died on May 24, 1790. | |
| Lyman Trumbull | Democratic | 34th | He was elected to the U.S. Senate prior to the first session. | ||
| Charles F. Van de Water | Republican | 67th | Died in a car crash on November 20, 1920. | ||
| Ambrose R. Wright | Democratic | 43rd | Died on December 21, 1872. |