There were elections in 1943 to the United States House of Representatives:
| District | Incumbent | This race | |||
|---|---|---|---|---|---|
| Member | Party | First elected | Results | Candidates | |
| Missouri 6 | Vacant | Incumbent Philip A. Bennett (R) died in previous Congress. New member elected January 12, 1943. Republican hold. |
| ||
| California 2 | Harry L. Englebright | Republican | 1926 (special) | Incumbent died May 13, 1943. New member elected August 31, 1943. Democratic gain. |
|
| Kansas 2 | U. S. Guyer | Republican | 1924 (special) 1924 (retired) 1926 |
Incumbent died June 5, 1943. New member elected September 14, 1943. Republican hold. |
|
| New York 32 | Francis D. Culkin | Republican | 1928 (special) | Incumbent died August 4, 1943. New member elected November 2, 1943. Republican hold. |
|
| Pennsylvania 23 | James E. Van Zandt | Republican | 1938 | Incumbent resigned September 24, 1943, after being called to active duty in the US Armed Forces. New member elected November 2, 1943. Republican hold. |
|
| Kentucky 4 | Edward W. Creal | Democratic | 1935 (special) | Incumbent died October 13, 1943. New member elected November 30, 1943. Republican gain. |
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