| Lake Llacsacocha | |
| Location: | Peru Junín Region |
| Coords: | -12.0286°N -75.755°W[1] |
| Pushpin Map: | Peru |
| Elevation: | 4393m (14,413feet) |
Lake Llacsacocha (possibly from Quechua llaksa puna teal (Anas puna); fearful; melting of metals; metal; bronze; a small ceremonial collar, qucha lake) is a lake in Peru located in the Junín Region, Jauja Province, Canchayllo District. It lies northeast of a lake with the same name, southwest of Chalhuacocha and west of Mancacocha.