There were elections in 1929 to the United States House of Representatives:
|- ! | William A. Oldfield | | 1908 | | Incumbent died November 19, 1928.<br>New member elected January 9, 1929 to finish her husband's term.<br>Democratic hold. | nowrap |
|- ! | Charles L. Faust | | Republican | 1921 | | Incumbent died December 17, 1928.<br/>New member elected February 5, 1929.<br/>Republican hold. | nowrap |
Elections are listed by date and district.
|- ! | William A. Oldfield | | 1908 | | Incumbent died November 19, 1928.<br>New member elected January 9, 1929.<br>Democratic hold. | nowrap |
|- ! | Charles L. Faust | | Republican | 1921 | | Incumbent died December 17, 1928.<br/>New member elected February 5, 1929.<br/>Republican hold. | nowrap |
|- ! | Charles W. Roark | | Republican | 1928 | | Incumbent died April 5, 1929.<br/>New member elected June 1, 1929.<br/>Democratic gain. | nowrap |
|- ! | John J. Casey | | Democratic | 1912<br/>1916 <br/>1918<br/>1920 <br/>1922<br/>1924 <br/>1926 | | Incumbent died May 5, 1929.<br/>New member elected June 1, 1929.<br/>Republican gain. | nowrap |
|- ! | Walter Newton | | Republican | 1918 | | Incumbent resigned June 30, 1929, after being appointed secretary to President Herbert Hoover.<br/>New member elected July 17, 1929.<br/>Republican hold. | nowrap |
|- ! | Whitmell P. Martin | | Democratic | 1912 | | Incumbent died April 6, 1929.<br/>New member elected August 6, 1929.<br/>Democratic hold. | nowrap |
|- ! | Leslie J. Steele | | Democratic | 1926 | | Incumbent died July 24, 1929.<br/>New member elected October 2, 1929.<br/>Democratic hold. | nowrap |
|- ! | Ole J. Kvale | | FarmerâÂÂLabor | 1922 | | Incumbent died September 11, 1929.<br/>New member elected October 16, 1929.<br/>FarmerâÂÂLabor hold. | nowrap |
|- ! | Royal Hurlburt Weller | | Democratic | 1922 | | Incumbent member-elect died March 1, 1929.<br/>New member elected November 5, 1929.<br/>Democratic hold. | nowrap |