| El Rosario | |
| Settlement Type: | Municipality |
| Other Name: | El Rosario Cuscatlan |
| Pushpin Map: | El Salvador |
| Pushpin Label Position: | bottom |
| Pushpin Mapsize: | 300 |
| Pushpin Map Caption: | Location in El Salvador |
| Subdivision Type: | Country |
| Subdivision Name: |  El Salvador |
| Subdivision Type1: | Department |
| Subdivision Name1: | Cuscatlán Department |
| Leader Title: | Alcalde |
| Leader Name: | Odilio Portillo |
| Established Date: | 1872 |
| Unit Pref: | Imperial |
| Population As Of: | 2006 |
| Population Blank1 Title: | Ethnicities |
| Coordinates: | 13.6667°N -146°W |
| Elevation M: | 616 |
El Rosario is a municipality in the Cuscatlán department of El Salvador.