Arenal can refer to the following:
Location
- El Arenal, a town in Spain
- El Arenal, Chile, a town in Chile
- Arenal, Yoro, a municipality in Honduras
- El Arenal, Majorca, a town in the city of Palma, Majorca
- El Arenal, Jalisco, a municipality in Jalisco, Mexico
Conservation Area
- Arenal Tilaran Conservation Area, a conservation area in Costa Rica
- Arenal Volcano, a volcano in Costa Rica
- Lake Arenal, a lake in Costa Rica
People
- Luis Arenal Bastar, Mexican painter, engraver and sculptor.