| State Senate: | Kentucky |
| District: | 4th |
| Term Start: | January 1, 1966 |
| Term End: | January 1, 1982 |
| Predecessor: | J. Murray Blue |
| Successor: | Henry G. Lackey |
| Term Start1: | January 1, 1954 |
| Term End1: | January 1, 1958 |
| Predecessor1: | Stanley Hoffman |
| Successor1: | J. Murray Blue |
| Birth Date: | 1 November 1921 |
| Birth Place: | Harrodsburg, Kentucky |
| Death Place: | Henderson, Kentucky |
| Education: | Centre College University of Kentucky College of Law |
| Allegiance: |  United States |
| Battles: | World War II |
William L. Sullivan (November 1, 1921 - September 11, 2013) was an American lawyer and politician.
Born in Harrodsburg, Kentucky, Sullivan served in the United States Army during World War II. He received his bachelor's degree from Centre College and his law degree from University of Kentucky College of Law. He then practiced law. He served in the Kentucky State Senate in 1954-1958 and 1966-1982 and was acting Governor of Kentucky several times. He died in Henderson, Kentucky.[1] [2]