| Mary Wagaki | |
| Nationality: | Kenyan |
| Sport: | Long-distance running |
| Event: | Marathon |
| Birth Date: | 20 June 1954 |
Mary Wagaki (born 20 June 1954) is a Kenyan long-distance runner. She competed in the women's marathon at the 1984 Summer Olympics.[1] Wagaki won a silver medal in the 1500 metres at the 1973 All-Africa Games.