Saint Marina may refer to:
- Saint Margaret of Antioch, also known as Saint Margaret the Virgin, Saint Marina the Martyr or Agia Marina by the Orthodox Church
- Saint Marina of Aguas Santas (119–139), virgin and martyr of Balcagia (current Baiona, Spain)
- Saint Marina the Monk, also known as Marina the Syrian, lived in the Monastery of Qannoubine, in the Holy Valley, Lebanon; venerated by Maronite Church
- Venerable Marina de Escobar