There were six elections in 1925 to the United States House of Representatives
Elections are listed by date and district.
|- ! | colspan=3 | Vacant | | Incumbent member-elect Julius Kahn (R) died December 18, 1924, during the 68th Congress, after his re-election to the 69th Congress.<br/>New member elected February 17, 1925 to begin her husband's term in the 69th Congress.<br/>Republican hold. | nowrap |
|- ! | John J. Rogers | | Republican | 1912 | | Incumbent died March 28, 1925.<br/>New member elected June 30, 1925.<br/>Republican hold. | nowrap |
|- ! | Arthur B. Williams | | Republican | 1923 | | Incumbent died May 1, 1925.<br/>New member elected August 18, 1925.<br/>Republican hold. | nowrap |
|- ! | George B. Churchill | | Republican | 1924 | | Incumbent died July 1, 1925.<br/>New member elected September 29, 1925.<br/>Republican hold. | nowrap |
|- ! | colspan=3 | Vacant | | Member-elect T. Frank Appleby (R) died December 15, 1924, during the 68th Congress, after his re-election to the 69th Congress.<br/>New member elected November 3, 1925 to finish his father's term.<br/>Republican hold. | nowrap |
|- ! | Robert Y. Thomas Jr. | | Democratic | 1908 | | Incumbent died September 3, 1925.<br/>New member elected December 26, 1925.<br/>Democratic hold. | nowrap |