| Maria Santos | |
| Fullname: | Maria Carlos Martins dos Santos |
| Strokes: | Backstroke and medley |
| Club: | GesLoures |
| Birth Date: | 18 December 1978 |
Maria Carlos Martins dos Santos (born December 18, 1978) is a retired female backstroke and medley swimmer from Portugal, who competed for her native country at the 1996 Olympic Games in Atlanta, Georgia.