| Yanajaja | |
| Elevation M: | 5173 |
| Language: | Quechua |
| Location: | Peru, Arequipa Region |
| Map: | Peru |
| Map Size: | 200 |
| Coordinates: | -15.4653°N -72.1944°W |
Yanajaja (possibly from Quechua yana black, qaqa rock, "black rock") is a 5173m (16,972feet) mountain in the west of the Chila mountain range in the Andes of Peru. It is located in the Arequipa Region, Castilla Province, Chachas District.[1] Yanajaja lies southwest of Cerani at a lake named Cochapunco.