| San Patricio River | |
| Pushpin Map: | Puerto Rico |
| Pushpin Map Caption: | Location of mouth |
| Source1 Location: | Corcho, Utuado |
| Mouth Location: | Cerrillos River |
| Progression: | San Patricio Maragüez |
| Subdivision Type1: | Commonwealth |
| Subdivision Name1: | Puerto Rico |
| Subdivision Type2: | Municipality |
| Subdivision Name2: | Ponce |
| Length: | 6.3km (03.9miles)[1] |
| Source1 Elevation: | 1917feet[2] |
| Mouth Elevation: | 660feet[3] |
| River System: | Río Bucaná |
| Tributaries Left: | Quebrada La Mocha |
San Patricio River (Spanish: Río San Patricio) is a river in the municipality of Ponce, Puerto Rico. It is part of the Bucaná River river system via Cerrillos River. San Patricio is one of the 14 rivers in the municipality.
San Patricio River has its origin in the sector called Corcho, in the municipality of Utuado.[4]
The river's course is southward from Utuado and into barrio San Patricio of the municipality of Ponce. After progressing south through barrio San Patricio, the river enters barrio Maragüez also in the municipality of Ponce. From there it continues its southerly progression until it feeds into Río Cerrillos.[5]