| Official Name: | San Carlos Sija |
| Settlement Type: | Municipality and town |
| Pushpin Map: | Guatemala |
| Subdivision Type: | Country |
| Subdivision Name: |  Guatemala |
| Subdivision Name1: | Quetzaltenango |
| Government Type: | Democratic |
| Leader Title: | Mayor |
| Leader Name: | Leonides Calderon |
| Established Date: | 1525 |
| Unit Pref: | Imperial |
| Area Total Km2: | 160 |
| Population As Of: | 2010 |
| Population Total: | 31000 |
| Population Density Km2: | 193 |
| Timezone: | Central Time |
| Utc Offset: | +6 |
| Coordinates: | 14.9833°N -124°W |
| Elevation Ft: | 9000 |
| Area Code: | 502 |
| Blank Name: | Climate |
| Blank Info: | Cwb |
San Carlos Sija is a municipality in Quetzaltenango department of Guatemala.