| CONGRESS | SENATOR | TERM BEGAN | TERM ENDED | COMMENTS |
| Class 2 |
| 86th-90th | E. L. (Bob) Bartlett (D) | Jan. 3, 1959 |
Dec.
11, 1968 | Died |
| 90th-110th | Theodore F. (Ted) Stevens (R) |
Dec.
24, 1968 | Jan. 3, 2009 | Appointed, then elected |
| 111th-113th | Mark Begich (D) | Jan. 3, 2009 | Jan. 3, 2015 | |
| 114th- | Daniel Scott Sullivan (R) | Jan. 3, 2015 |
Present
| |
| Class 3 |
| 86th-90th | Ernest H. Gruening (D) | Jan. 3, 1959 | Jan. 3, 1969 | |
| 91st-96th | M. R. (Mike) Gravel (D) | Jan. 3, 1969 | Jan. 3, 1981 | |
| 97th-107th | Frank H. Murkowski (R) | Jan. 3, 1981 |
Dec.
2, 2002 | Resigned |
| 107th- | Lisa Murkowski (R) |
Dec.
20, 2002 |
Present
| Appointed, then elected |
