| Dennis Sinclair | |
| Fullname: | Dennis Sinclair |
| Birth Date: | 20 November 1931 |
| Birth Place: | Middlesbrough, England |
| Years1: | 1952–1953 |
| Caps1: | 0 |
| Goals1: | 0 |
| Years2: | 1953–1954 |
| Caps2: | 1 |
| Goals2: | 0 |
| Totalcaps: | 1 |
| Totalgoals: | 0 |
Dennis Sinclair (20 November 1931 – 2011) was an English professional footballer who played in the Football League for Mansfield Town.