| Greg Halder | |
| Birth Date: | 5 December 1955 |
| Birth Place: | Toronto, Ontario, Canada |
| Height: | 6 ft 2 in |
| Plays: | Right-handed |
| Singlesrecord: | 8–27 |
| Wimbledonresult: | 1R (1978) |
| Usopenresult: | 1R (1978) |
| Doublesrecord: | 6–24 |
| Frenchopendoublesresult: | 2R (1977) |
| Wimbledondoublesresult: | 1R (1978) |
Greg Halder (born December 5, 1955) is a Canadian former professional tennis player.
Born and raised in Toronto, Halder is the son of ice hockey player Wally Halder, who was a member of the gold medal-winning team at the 1948 Winter Olympics.[1] He turned professional in 1974.[2] At the 1977 Volvo International in North Conway he had an upset win over world number five Raul Ramirez.[3] In 1978 he featured in the singles main draws of the Wimbledon Championships and US Open. He represented Canada in two Davis Cup ties during his career.[1]