| Official Name: | Cerro Castillo |
| Subdivision Type: | Region |
| Subdivision Name: | Magallanes |
| Subdivision Type1: | Province |
| Subdivision Name1: | Última Esperanza |
| Subdivision Type2: | Municipalidad |
| Subdivision Name2: | Torres del Paine |
| Subdivision Type3: | Comuna |
| Subdivision Name3: | Torres del Paine |
| Government Type: | Municipalidad |
| Leader Title: | Alcalde |
| Leader Name: | Anahí Cárdenas Rodríguez |
| Population As Of: | 2002 census[1] |
| Population Total: | 163 |
| Timezone: | Chilean Standard |
| Utc Offset: | −04:00 |
| Timezone Dst: | Chilean Daylight |
| Utc Offset Dst: | −03:00 |
| Area Code: | Country + town = 56 + 61 |
Cerro Castillo is a hamlet (Spanish; Castilian: caserío) southeast of Torres del Paine National Park, and is the head of Torres del Paine commune, in the Magallanes Region.
The village is close to the Argentine border. The Chilean customs and immigration offices serving the border crossing (officially known as Río Don Guillermo) are located in the village.