| CONGRESS | SENATOR | TERM BEGAN | TERM ENDED | COMMENTS |
|---|---|---|---|---|
| Class 1 | ||||
| 86th-94th | Hiram L. Fong (R) | Aug. 21, 1959 | Jan. 3, 1977 | |
| 95th-101st | Spark M. Matsunaga (D) | Jan. 3, 1977 | Apr. 15, 1990 | Died |
| 101st-112th | Daniel K. Akaka (D) | May 16, 1990 | Jan. 3, 2013 | Appointed, then elected |
| 113th- | Mazie Hirono (D) | Jan. 3, 2013 | Present | |
| Class 3 | ||||
| 86th-87th | Oren E. Long (D) | Aug. 21, 1959 | Jan. 3, 1963 | |
| 88th-112th | Daniel K. Inouye (D) | Jan. 3, 1963 | Dec. 17, 2012 | Died |
| 112th- | Brian E. Schatz (D) | Dec. 26, 2012 | Present | Appointed, then elected |
