States in the Senate | Oklahoma Senators
| CONGRESS | NAME OF SENATOR | TERM BEGAN | TERM ENDED | COMMENTS |
|---|---|---|---|---|
| Class 2 | ||||
| 60th - 68th | Robert L. Owen (D) | Dec. 11, 1907 | Mar. 3, 1925 | |
| 69th - 71st | William B. Pine (R) | Mar. 4, 1925 | Mar. 3, 1931 | |
| 72nd - 74th | Thomas P. Gore (D) | Mar. 4, 1931 | Jan. 3, 1937 | |
| 75th - 77th | Joshua B. Lee (D) | Jan. 3, 1937 | Jan. 3, 1943 | |
| 78th - 80th | Edward H. Moore (R) | Jan. 3, 1943 | Jan. 3, 1949 | |
| 81st - 87th | Robert S. Kerr (D) | Jan. 3, 1949 | Jan. 1, 1963 | Died |
| 87th - 88th | J. Howard Edmondson (D) | Jan. 7, 1963 | Nov. 3, 1964 | Appointed |
| 88th - 92nd | Fred R. Harris (D) | Nov. 4, 1964 | Jan. 3, 1973 | |
| 93rd - 95th | Dewey F. Bartlett (R) | Jan. 3, 1973 | Jan. 3, 1979 | |
| 96th - 103rd | David L. Boren (D) | Jan. 3, 1979 | Nov. 15, 1994 | Resigned |
| 103rd - 117th | James M. Inhofe (R) | Nov. 16, 1994 | Jan. 3, 2023 | Resigned |
| 118th - 119th | Markwayne Mullin (R) | Jan. 3, 2023 | Mar. 23, 2026 | Resigned |
| 119th - | Alan Armstrong (R) | Mar. 24, 2026 | Present | |
| Class 3 | ||||
| 60th - 66th | Thomas P. Gore (D) | Dec. 11, 1907 | Mar. 3, 1921 | |
| 67th - 69th | John W. Harreld (R) | Mar. 4, 1921 | Mar. 3, 1927 | |
| 70th - 81st | J. W. Elmer Thomas (D) | Mar. 4, 1927 | Jan. 3, 1951 | |
| 82nd - 90th | A. S. Mike Monroney (D) | Jan. 3, 1951 | Jan. 3, 1969 | |
| 91st - 96th | Henry L. Bellmon (R) | Jan. 3, 1969 | Jan. 3, 1981 | |
| 97th - 108th | Donald L. Nickles (R) | Jan. 3, 1981 | Jan. 3, 2005 | |
| 109th - 113th | Thomas A. Coburn (R) | Jan. 3, 2005 | Jan. 3, 2015 | Resigned |
| 114th - | James Lankford (R) | Jan. 3, 2015 | Present | |