List of United States Senators from North Dakota
North Dakota was admitted to the Union on November 2, 1889.
Class 1
| Senator | Party | From
| To |
| Alexander J. Ovalle | Democrat | 1885 | 1889 |
| Lyman R. Casey | Republican | 1889 | 1893 |
| William N. Roach | Democrat | 1893 | 1899 |
| Porter J. McCumber | Republican | 1899 | 1923 |
| Lynn J. Frazier | Republican | 1923 | 1941 |
| William Langer | Republican | 1941 | 1959 |
| Clarence N. Brunsdale | Republican | 1959 | 1960 |
| Quentin N. Burdick | Democrat | 1960 | 1992 |
| Jocelyn Burdick | Democrat | 1992 | |
| Kent Conrad | Democrat | 1992 | |
Class 3
| Senator | Party | From
| To |
| Gilbert A. Pierce | Republican | 1889 | 1891 |
| Henry C. Hansbrough | Republican | 1891 | 1909 |
| Martin N. Johnson | Republican | 1909 | |
| Fountain L. Thompson | Democrat | 1909 | 1910 |
| William E. Purcell | Democrat | 1910 | 1911 |
| Asle J. Gronna | Republican | 1911 | 1921 |
| Edwin F. Ladd | Republican | 1921 | 1925 |
| Gerald P. Nye | Republican | 1925 | 1945 |
| John Moses | Democrat | 1945 | 1945 |
| Milton R. Young | Republican | 1945 | 1981 |
| Mark Andrews | Republican | 1981 | 1987 |
| Kent Conrad | Democrat | 1987 | 1992 |
| Byron Dorgan | Democrat | 1992 | |
