| Co-cathedral of San Pedro | |
| Native Name: | Concatedral de San Pedro |
| Native Language: | Spanish |
| Coordinates: | 41.766°N -2.459°W |
| Location: | Soria, Spain |
| Designation1: | Spain |
| Designation1 Offname: | Concatedral de San Pedro |
| Designation1 Type: | Non-movable |
| Designation1 Criteria: | Monument |
| Designation1 Date: | 1979 |
| Designation1 Number: | RI-51-0004390 |
The Co-cathedral of San Pedro (Spanish: Concatedral de San Pedro) is a medieval building in Soria, Spain. It is in the Roman Catholic Diocese of Osma-Soria.
Dedicated to St. Peter, it was a collegiate church from the 12th century. It was built in the centre of the medieval town.It was raised to the status of cathedral in the 1950s.
The cloister was given a heritage listing in the 1920s.
It was declared Bien de Interés Cultural in 1979.