| Constituency Mp: | Lincoln |
| Parliament: | Canadian |
| Predecessor: | James McNulty |
| Successor: | Ken Higson |
| Term Start: | 1968 |
| Term End: | 1972 |
| Birth Date: | August 20, 1915 |
| Birth Place: | Thorold, Ontario, Canada |
| Death Date: | May 30, 1993 |
| Party: | Liberal |
| Occupation: | safety director |
H. Gordon Barrett (August 20, 1915 – May 30, 1993) was a Canadian politician and safety director. He was elected to the House of Commons of Canada as a Member of the Liberal Party to represent the riding of Lincoln. During the 28th Parliament, he was a member of the Standing Committee on Agriculture. He was defeated in 1972. Prior to his federal political experience, he was a lieutenant in the Canadian Infantry in World War II between 1942 and 1945 and returned to Canada to become a councillor for Thorold, Ontario between 1946 and 1959.