| Monastery of San Juan de Duero | |
| Native Name: | Monasterio de San Juan de Duero |
| Native Language: | Spanish |
| Coordinates: | 41.7683°N -2.4544°W |
| Location: | Soria, Spain |
| Designation1: | Spain |
| Designation1 Offname: | Monasterio de San Juan de Duero |
| Designation1 Type: | Non-movable |
| Designation1 Criteria: | Monument |
| Designation1 Date: | 1882 |
| Designation1 Number: | RI-51-0000032 |
The Monastery of San Juan de Duero (Spanish: Monasterio de San Juan de Duero) is a ruined, medieval monastery located in Soria, Spain. It belonged to the Knights Hospitaller.
The building has been protected since 1882 and is a Bien de Interés Cultural.