| Don Grierson | |
| Position: | Right Wing |
| Played For: | Houston Aeros |
| Shoots: | Right |
| Height Ft: | 5 |
| Height In: | 10 |
| Weight Lb: | 185 |
| Birth Date: | June 16, 1947 |
| Birth Place: | Toronto, Ontario, Canada |
| Draft: | 23rd overall |
| Draft Year: | 1968 |
| Draft Team: | Montreal Canadiens |
| Career Start: | 1968 |
| Career End: | 1977 |
Donald James "Don" Grierson (born June 16, 1947) is a former Canadian professional ice hockey player in the World Hockey Association (WHA).
Born in Toronto, Ontario, Grierson played junior ice hockey for the North Bay Trappers. After one season of junior, he was drafted in the third round (23rd overall) of the 1968 NHL Amateur Draft by the Montreal Canadiens of the National Hockey League (NHL). Though he was drafted into the NHL, he never played a game there. He spent most of his career in the minors and two seasons (1972–73 and 1973–74) in the World Hockey Association, playing for the Houston Aeros.