| Official Name: | San Marcos |
| Nickname: | Granero del Norte |
| Pushpin Map: | Peru |
| Subdivision Type: | Country |
| Subdivision Type1: | Region |
| Subdivision Name1: | Cajamarca |
| Subdivision Type2: | Province |
| Subdivision Name2: | San Marcos |
| Subdivision Type3: | District |
| Subdivision Name3: | Pedro Galvez |
| Leader Title: | Mayor |
| Leader Name: | Flavio Carlos Machuca Romero |
| Settlement Type: | Town |
| Timezone: | PET |
| Utc Offset: | -5 |
| Coordinates: | -7.3353°N -78.1697°W |
| Elevation M: | 2251 |
San Marcos is a town in Northern Peru, capital of San Marcos province in the region of Cajamarca.[1] San Marcos has volleyball facilities located at Doña Fide's.
San Marcos has a subtropical highland climate (Köppen: Cwb)[2] with warm days and cool nights. San Marcos has a dry season from June to August.