Uma Jalsu (Aymara for spring, source,[2] Hispanicized spelling Humajalso) is a mountain in the Andes of southern Peru, about 5,000 m (16,000 ft) high.

It is located in the Puno Region, El Collao Province, Capazo District.

Uma Jalsu lies west of the mountain Jiwaña and southeast of Wila Chunkara.

It flows through the plain before it reaches the Mawri River (Mauri).

This Puno Region geography article is a stub.