| William Westcott | |
| Birth Date: | 1 September 1922 |
| Birth Place: | Milwaukee, Wisconsin |
| Death Place: | Mesa, Arizona |
| Allegiance: | United States |
| Branch: | United States Army Air Forces United States Air Force |
| Serviceyears: | 1942–1955 |
| Rank: | Lieutenant colonel |
| Battles: | World War II Korean War |
| Awards: | Silver Star Distinguished Flying Cross (2) |
William Henry Wescott (September 1, 1922 – February 25, 2016) was a United States Air Force flying ace of the Korean War, credited with shooting down five enemy aircraft.