| CONGRESS | SENATOR | TERM BEGAN | TERM ENDED | COMMENTS |
|---|---|---|---|---|
| Class 2 | ||||
| 24th-28th | William S. Fulton (J, D) | Sept. 18, 1836 | Aug. 15, 1844 | Died |
| 28th-30th | Chester Ashley (D) | Nov. 8, 1844 | Apr. 29, 1848 | Died |
| 30th-37th | William K. Sebastian (D) | May 12, 1848 | Jul. 11, 1861 | Appointed, then elected; Expelled |
| 40th-41st | Alexander McDonald (R) | Jun. 22, 18681 | Mar. 3, 1871 | |
| 42nd-44th | Powell Clayton (R) | Mar. 4, 1871 | Mar. 3, 1877 | |
| 45th-49th | Augustus H. Garland (D) | Mar. 4, 1877 | Mar. 6, 1885 | Resigned |
| 49th-59th | James H. Berry (D) | Mar. 20, 1885 | Mar. 3, 1907 | |
| 60th-62nd | Jeff Davis (D) | Mar. 4, 1907 | Jan. 3, 1913 | Died |
| 62nd | John N. Heiskell (D) | Jan. 6, 1913 | Jan. 29, 1913 | Appointed |
| 62nd | William M. Kavanaugh (D) | Jan. 29, 1913 | Mar. 3, 1913 | |
| 63rd-75th | Joseph T. Robinson (D) | Mar. 10, 19132 | Jul. 14, 1937 | Died |
| 75th-77th | John E. Miller (D) | Nov. 15, 19373 | Mar. 31, 1941 | Resigned |
| 77th | G. Lloyd Spencer (D) | Apr. 1, 1941 | Jan. 3, 1943 | Appointed |
| 78th-95th | John L. McClellan (D) | Jan. 3, 1943 | Nov. 28, 1977 | Died |
| 95th | Kaneaster Hodges Jr. (D) | Dec. 10, 1977 | Jan. 3, 1979 | Appointed |
| 96th-104th | David H. Pryor (D) | Jan. 3, 1979 | Jan. 3, 1997 | |
| 105th-107th | Tim Hutchinson (R) | Jan. 3, 1997 | Jan. 3, 2003 | |
| 108th-113th | Mark Pryor (D) | Jan. 3, 2003 | Jan. 3, 2015 | |
| 114th- | Tom Cotton (R) | Jan. 3, 2015 | Present | |
| Class 3 | ||||
| 24th-30th | Ambrose H. Sevier (J, D) | Sept. 18, 1836 | Mar. 15, 1848 | Resigned |
| 30th-33rd | Solon Borland (D) | Mar. 30, 1848 | Apr. 3, 1853 | Appointed, then elected; resigned |
| 33rd-36th | Robert W. Johnson (D) | Jul. 6, 1853 | Mar. 3, 1861 | Appointed, then elected |
| 37th | Charles B. Mitchel (D) | Mar. 4, 1861 | Jul. 11, 1861 | Expelled |
| 40th-42nd | Benjamin F. Rice (R) | Jun. 23, 18684 | Mar. 3, 1873 | |
| 43rd-45th | Stephen W. Dorsey (R) | Mar. 4, 1873 | Mar. 3, 1879 | |
| 46th-48th | James D. Walker (D) | Mar. 4, 1879 | Mar. 3, 1885 | |
| 49th-57th | James K. Jones (D) | Mar. 4, 1885 | Mar. 3, 1903 | |
| 58th-64th | James P. Clarke (D) | Mar. 4, 1903 | Oct. 1, 1916 | Died |
| 64th-66th | William F. Kirby (D) | Nov. 8, 1916 | Mar. 3, 1921 | |
| 67th-72nd | Thaddeus H. Carraway (D) | Mar. 4, 1921 | Nov. 6, 1931 | Died |
| 72nd-78th | Hattie W. Carraway (D) | Nov. 13, 1931 | Jan. 3, 1945 | Appointed, then elected |
| 79th-93rd | J. William Fulbright (D) | Jan. 3, 1945 | Dec. 31, 1974 | Resigned |
| 94th-105th | Dale Bumpers (D) | Jan. 3, 1975 | Jan. 3, 1999 | |
| 106th-111th | Blanche Lambert Lincoln (D) | Jan. 3, 1999 | Jan. 3, 2011 | |
| 112th- | John Boozman (R) | Jan. 3, 2011 | Present | |
1. Vacancy from July 11, 1861, to June 22, 1868, because of Civil War. Elected by legislature, to fill vacancy in term beginning March 4, 1865.
2. Elected January 28, 1913 for term beginning March 4, 1913. Took oath March 10, 1913. Served as governor until March 8, 1913.
3. Vacancy from July 15 to November 14, 1937. Elected October 18, 1937 to complete term ending January 3, 1943. Served in House during interim.
4. Vacancy from July 11, 1861, to June 23, 1868, because of Civil War. By legislature, to fill vacancy in term beginning March 4, 1867.
