Metapán is a municipality in the Santa Ana department of El Salvador.

The city of Metapán, next to the San Jose River, at 470 meters of height, is located at 46 kilometers to the north of Santa Ana city, joined together by a paved highway. The municipality extends beyond the city and into the country surrounding the city. The major Hydroelectric Power station at the Guajoyo river is located in Metapán.