| Incumbent retired to run for U. S. senator, but lost that nomination and then lost re-election as an Independent.New member elected.Republican hold. |} Ohio |- ! | Charles H. Elston | | Republican | 1938 | Incumbent re-elected. | nowrap | |- ! | William E. Hess | | Republican | 1938 | Incumbent re-elected. | nowrap | |- ! | Harry P. Jeffrey | | Republican | 1942 | | Incumbent lost re-election.New member elected.Democratic gain. | nowrap | |- ! | Robert Franklin Jones | | Republican | 1938 | Incumbent re-elected. | nowrap | |- ! | Cliff Clevenger | | Republican | 1938 | Incumbent re-elected. | nowrap | |- ! | Edward O. McCowen | | Republican | 1942 | Incumbent re-elected. | nowrap | |- ! | Clarence J. Brown | | Republican | 1938 | Incumbent re-elected. | nowrap | |- ! | Frederick C. Smith | | Republican | 1938 | Incumbent re-elected. | nowrap | |- ! | Homer A. Ramey | | Republican | 1942 | Incumbent re-elected. | nowrap | |- ! | Thomas A. Jenkins | | Republican | 1924 | Incumbent re-elected. | nowrap | |- ! | Walter E. Brehm | | Republican | 1942 | Incumbent re-elected. | nowrap | |- ! | John M. Vorys | | Republican | 1938 | Incumbent re-elected. | nowrap | |- ! | Alvin F. Weichel | | Republican | 1942 | Incumbent re-elected. | nowrap | |- ! | Edmund Rowe | | Republican | 1942 | | Incumbent lost re-election.New member elected.Democratic gain. | nowrap | |- ! | Percy W. Griffiths | | Republican | 1942 | Incumbent re-elected. | nowrap | |- ! | Henderson H. Carson | | Republican | 1942 | | Incumbent lost re-election.New member elected.Democratic gain. | nowrap | |- ! | J. Harry McGregor | | Republican | 1940 | Incumbent re-elected. | nowrap | |- ! | Earl R. Lewis | | Republican | 1942 | Incumbent re-elected. | nowrap | |- ! | Michael J. Kirwan | | Democratic | 1936 | Incumbent re-elected. | nowrap | |- ! | Michael A. Feighan | | Democratic | 1942 | Incumbent re-elected. | nowrap | |- ! | Robert Crosser | | Democratic | 1922 | Incumbent re-elected. | nowrap | |- ! | Frances P. Bolton