| San Nicolás Tolentino | |
| Settlement Type: | Municipality and town |
| Pushpin Map: | Mexico |
| Pushpin Map Caption: | Location in Mexico |
| Pushpin Label Position: | right |
| Subdivision Type: | Country |
| Subdivision Name: |  Mexico |
| Subdivision Type1: | State |
| Subdivision Name1: | San Luis Potosí |
| Coordinates: | 22.2489°N -100.5525°W |
| Leader Title: | Municipal President (Presidente Municipal) |
| Established Title: | Established |
| Established Date: | 1827 |
| Area Total Km2: | 689.36 |
| Population As Of: | 2009 |
| Population Total: | 5547 |
| Timezone: | Central Standard Time |
| Utc Offset: | -6 |
| Timezone Dst: | Central Daylight Time |
| Utc Offset Dst: | -5 |
| Elevation M: | 1460 |
San Nicolás Tolentino is a municipality and town located in the Mexican state of San Luis Potosí, Mexico. The municipality was founded in 1614, and consists of many small towns and villages. Santa Catarina is the largest town in the municipality. In 1827, the Municipal Presidency was established in the town.
The municipality of San Nicolás Tolentino is located in the "Middle Zone" (Zona Media) of the state of San Luis Potosí, in the Sierra Madre Oriental. The land consists of high plains and mountains.[1]