| Terrence Haynes | |
| Fullname: | Terrence Elton Haynes |
| Strokes: | Freestyle |
| Club: | Toronto Swim Club |
| Collegeteam: | University of Toronto Varsity Blues |
| Birth Date: | 1984 10, mf=yes |
| Birth Place: | Toronto, Ontario, Canada |
| Weight: | 78kg (172lb) |
Terrence Elton Haynes (born October 5, 1984) is a two-time Olympic swimmer from Barbados. He represented Barbados at the 2004 and 2008 Olympics. He currently resides in Toronto, as a member of the Varsity Blues swim team at the University of Toronto.
He holds the Barbadian record in the 50m and 100m freestyle events.