| Republican | 1924 | Incumbent re-elected. | nowrap | |- ! | Harold K. Claypool | | Democratic | 1936 | Incumbent re-elected. | nowrap | |- ! | John M. Vorys | | Republican | 1938 | Incumbent re-elected. | nowrap | |- ! | Dudley A. White | | Republican | 1936 | | Incumbent retired to run for U.S. senator.New member elected.Republican hold. | nowrap | |- ! | Dow W. Harter | | Democratic | 1932 | Incumbent re-elected. | nowrap | |- ! | Robert T. Secrest | | Democratic | 1932 | Incumbent re-elected. | nowrap | |- ! | James Seccombe | | Republican | 1938 | | Incumbent lost re-election.New member elected.Democratic gain. | nowrap | |- ! | J. Harry McGregor | | Republican | 1940 | Incumbent re-elected. | nowrap | |- ! | Earl R. Lewis | | Republican | 1938 | | Incumbent lost re-election.New member elected.Democratic gain. | nowrap | |- ! | Michael J. Kirwan | | Democratic | 1936 | Incumbent re-elected. | nowrap | |- ! | Martin L. Sweeney | | Democratic | 1931 | Incumbent re-elected. | nowrap | |- ! | Robert Crosser | | Democratic | 1922 | Incumbent re-elected. | nowrap | |- ! | Frances P. Bolton | | Republican | 1940 | Incumbent re-elected. | nowrap | |- ! | George H. Bender | | Republican | 1938 | Incumbent re-elected. | rowspan=2 nowrap | |- ! | L. L. Marshall | | Republican | 1938 | | Incumbent lost re-election.New member elected.Democratic gain. |} Oklahoma |- ! | Wesley E. Disney | | Democratic | 1930 | Incumbent re-elected. | nowrap | |- ! | John Conover Nichols | | Democratic | 1934 | Incumbent re-elected. | nowrap | |- ! | Wilburn Cartwright | | Democratic | 1926 | Incumbent re-elected. | nowrap | |- ! | Lyle Boren | | Democratic | 1936 | Incumbent re-elected. | nowrap | |- ! | A. S. Mike Monroney | | Democratic | 1938 | Incumbent re-elected. | nowrap | |- ! | Jed Johnson | | Democratic | 1926 | Incumbent re-elected. | nowrap | |- ! | Sam C. Massingale | | Democratic | 1934 | Incumbent re-elected. | nowrap | |- ! | Phil Ferguson | | Democratic | 1934 | | Incumbent