| San Carlos | |
| Settlement Type: | Municipality |
| Pushpin Label Position: | above |
| Pushpin Mapsize: | 300 |
| Pushpin Map Caption: | Location in Mexico |
| Subdivision Type: | Country |
| Subdivision Name: |  Mexico |
| Subdivision Type1: | State |
| Subdivision Name1: | Tamaulipas |
| Subdivision Type2: | Municipal seat |
| Subdivision Name2: | San Carlos |
| Population As Of: | 2010 |
| Population Total: | 9,331 |
| Population Blank1 Title: | Ethnicities |
| Population Blank2 Title: | Religions |
San Carlos Municipality is a municipality located in the Mexican state of Tamaulipas.