| Martina McCarthy | |
| Nationality: | Irish |
| Sport: | Sprinting |
| Event: | 4 × 400 metres relay |
| Birth Date: | 27 October 1981 |
Martina McCarthy (born 27 October 1981) is an Irish sprinter. She competed in the women's 4 × 400 metres relay at the 2000 Summer Olympics.[1]