| Achacollo | |
| Elevation M: | 5690 |
| Elevation Ref: | [1] |
| Range: | Andes, Barroso |
| Location: | Peru, Tacna Region |
| Map: | Peru |
| Map Size: | 200 |
| Coordinates: | -17.5633°N -69.8708°W |
Achacollo (possibly from Aymara Jach'a Qullu, jach'a big, great, qullu mountain, "big mountain") is a mountain in the Barroso mountain range in the Andes of Peru, about 5690m (18,670feet) high. It is situated in the Tacna Region, Tacna Province, Palca District, and in the Tarata Province, Estique District, northwest of the Chupiquiña volcano and Huancune.[2]