| Jack Winsor | |
| Assembly: | Newfoundland and Labrador House of |
| Constituency Am: | Fortune-Hermitage |
| Term Start: | 1975 |
| Term End: | 1979 |
| Successor: | Don Stewart |
| Party: | Liberal Party of Newfoundland and Labrador |
| Residence: | Gaultois, Newfoundland and Labrador |
C. Jack Winsor is a former Canadian politician who was elected to the Newfoundland and Labrador House of Assembly in the 1975 provincial election. He represented the electoral district of Fortune-Hermitage as a member of the Liberal Party of Newfoundland and Labrador. He lived in Gaultois, Newfoundland and Labrador.[1]