| El Rosario | |
| Settlement Type: | Municipality |
| 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: | Morazán Department |
| Unit Pref: | Imperial |
| Area Total Km2: | 19.12 |
| Population As Of: | 2007 |
| Population Total: | 1296 |
| Coordinates: | 13.866°N -88.21°W |
| Elevation M: | 839 |
El Rosario is a municipality in the Morazán department of El Salvador. The municipality has an area of 19.12 km² and a population of 1,296 according to the 2007 census.