| Santa María del Mar / El Puertu | |
| Settlement Type: | Parish |
| Pushpin Map: | Spain |
| Coordinates: | 43.5833°N -5.9833°W |
| Subdivision Type: | Country |
| Subdivision Name: | Spain |
| Subdivision Type1: | Autonomous community |
| Subdivision Name1: | Asturias |
| Subdivision Type2: | Province |
| Subdivision Name2: | Asturias |
| Subdivision Type3: | Municipality |
| Subdivision Name3: | Castrillón |
Santa María del Mar (Asturian: El Puertu; officially Santa María del Mar / El Puertu)[1] is one of eight parishes (administrative divisions) in Castrillón, a municipality within the province and autonomous community of Asturias, in northern Spain.