There were four special elections to the United States House of Representatives in 1919, during the 65th United States Congress and 66th United States Congress.
|- ! | Carter Glass | | Democratic | 1902 | | Incumbent resigned December 6, 1918, to become U.S. Secretary of the Treasury.<br/>New member elected February 25, 1919.<br/>Democratic hold.<br/>Winner also elected to the next term; see below. | nowrap |
|- ! | Carter Glass | | 1902 | | Incumbent resigned December 6, 1918, to become U.S. Secretary of the Treasury.<br/>New member elected February 25, 1919.<br/>Democratic hold.<br/>Winner also elected to finish the current term; see above. | nowrap |
|- ! | Edward E. Robbins | | Republican | 1916 | | Incumbent member-elect died January 25, 1919.<br/>New member elected March 4, 1919.<br/>Democratic gain. | nowrap |
|- ! | Charles C. Carlin | | 1907 | | Incumbent resigned to manage the presidential campaign of A. Mitchell Palmer.<br/>New member elected April 27, 1919.<br/>Democratic hold. | nowrap |
|- ! | Charles A. Sulzer | | 1916 | | Incumbent died April 28, 1919, during an election recount.<br/>New member elected June 5, 1919.<br/>Democratic hold.<br/>Winner would later be unseated by the contested election. | nowrap |
|- ! | John L. Burnett | | 1898 | | Incumbent died May 13, 1919.<br/>New member elected September 30, 1919.<br/>Democratic hold. | nowrap |
|- ! | Joseph B. Thompson | | 1912 | | Incumbent died September 18, 1919.<br/>New member elected November 8, 1919.<br/>Republican gain. | nowrap |
|- ! | colspan=3 | Vacant | | Incumbent James Clifton Wilson (D) did not take his seat.<br/>New member elected April 19, 1919.<br/>Democratic hold. |nowrap |
|- ! |Edwin Y. Webb | | 1902 | | Incumbent resigned November 10, 1919.<br/>New member elected December 16, 1919.<br/>Democratic hold. |nowrap |