| William T. Parker | |
| State Senate: | Virginia |
| District: | 14th |
| Term Start: | January 9, 1980 |
| Term End: | January 13, 1988 |
| Preceded: | Russell I. Townsend Jr. |
| Succeeded: | Mark Earley |
| State Delegate2: | Virginia |
| District2: | 38th |
| Term Start2: | January 14, 1976 |
| Term End2: | January 9, 1980 |
| Preceded2: | Stanley G. Bryan |
| Succeeded2: | Tom Forehand |
| Birth Name: | William Thomas Parker |
| Birth Date: | 29 August 1928 |
| Birth Place: | Norfolk, Virginia, U.S. |
| Death Place: | Chesapeake, Virginia, U.S. |
| Party: | Democratic |
| Branch: | United States Air Force |
William Thomas Parker (August 29, 1928 – January 25, 2014) was an American politician who served in the Virginia House of Delegates and Virginia Senate.[1] He was narrowly defeated for reelection in 1987 by lawyer Mark Earley.