| Marja Heikkilä | |
| Fullname: | Marja Elina Heikkilä |
| Strokes: | Freestyle |
| Club: | Swimming Jyväskylä, Oulun uimaseura |
| Birth Date: | 12 September 1977 |
| Birth Place: | Haapajärvi |
| Weight: | 62kg (137lb) |
Marja Heikkilä (born September 12, 1977 in Haapajärvi) is a former freestyle swimmer from Finland, who competed for her native country at the 1996 Summer Olympics in Atlanta, Georgia. There she finished in 16th place with the 4×100 m freestyle relay team, alongside Paula Harmokivi, Marja Pärssinen, and Minna Salmela.