Maria Costa may refer to:
- Maria Costa (poet) (1926–2016), Italian poet
- Maria Costa (gymnast) (born 1998), Portuguese rhythmic gymnast
- Maria Costa (actress), seen in Dangerous Minds
- Maria da Costa (born 1931), Olympic freestyle swimmer from Brazil
- Maria Della Costa (1926–2015), Brazilian actress and producer
- Maria Ludovica Costa, Italian rower