There were elections in 1971 to the United States House of Representatives:
| District | Incumbent | This race | |||
|---|---|---|---|---|---|
| Member | Party | First elected | Results | Candidates | |
| District of Columbia at-large | Vacant | District elected first delegate since the seat was re-established during previous congress. Democratic gain. |
| ||
| South Carolina 1 | Vacant | Incumbent L. Mendel Rivers (D) died during previous congress. New member elected April 27, 1971. Democratic hold. |
| ||
| Maryland 1 | Rogers Morton | Republican | 1962 | Incumbent resigned January 29, 1971, after being appointed U.S. Secretary of the Interior. New member elected May 25, 1971. Republican hold. |
|
| Pennsylvania 18 | Robert J. Corbett | Republican | 1938 1940 (lost) 1944 |
Incumbent died April 25, 1971. New member elected November 2, 1971. Republican hold. |
|
| Kentucky 6 | John C. Watts | Democratic | Incumbent died September 24, 1971. New member elected December 4, 1971. Democratic hold. |
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