| CONGRESS | SENATOR | TERM BEGAN | TERM ENDED | COMMENTS |
| Class 1 |
| 62nd-76th | Henry Fountain Ashurst (D) |
Mar.
27, 1912 | Jan. 3, 1941 | |
| 77th-82nd | Ernest W. McFarland (D) | Jan. 3, 1941 | Jan. 3, 1953 | |
| 83rd-88th | Barry M. Goldwater (R) | Jan. 3, 1953 | Jan. 3, 1965 | |
| 89th-94th | Paul J. Fannin (R) | Jan. 3, 1965 | Jan. 3, 1977 | |
| 95th-103rd | Dennis W. DeConcini (D) | Jan. 3, 1977 | Jan. 3, 1995 | |
| 104th-112th | Jon L. Kyl (R) | Jan. 3, 1995 | Jan. 3, 2013 | |
| 113th-115th | Jeff Flake (R) | Jan. 3, 2013 | Jan. 3, 2019 | |
| 116th- | Kyrsten Sinema (D) | Jan. 3, 2019 |
Present
| |
| Class 3 |
| 62nd-66th | Marcus A. Smith (D) |
Mar.
27, 1912 |
Mar.
3, 1921 | |
| 67th-69th | Ralph H. Cameron (R) |
Mar.
4, 1921 |
Mar.
3, 1927 | |
| 70th-90th | Carl T. Hayden (D) |
Mar.
4, 1927 | Jan. 3, 1969 | |
| 91st-99th | Barry M. Goldwater (R) | Jan. 3, 1969 | Jan. 3, 1987 | |
| 100th-115th | John S. McCain III (R) | Jan. 3, 1987 |
Aug.
25, 2018 | Died |
| 115th | Jon L. Kyl (R) |
Sept.
4, 2018 |
Dec.
31, 2018 | Appointed |
| 116th | Martha McSally (R) | Jan. 3, 2019 |
Dec.
2, 2020 | Appointed |
| 116th- | Mark Edward Kelly (D) |
Dec.
2, 2020 |
Present
| |
