Tres Hermanas Falls, Tiered waterfall in Otishi National Park, Peru.

Tres Hermanas Falls is a multi-tiered waterfall in Otishi National Park that descends about 900 meters through a deep canyon system. The cascade flows down in distinct sections before joining the Río Cutevirini below.

The waterfall became known through photography by Alejandro Balaguer while he was researching nearby cascades in the region. His documentation brought attention to this remote natural formation.

The name Tres Hermanas, Spanish for Three Sisters, refers to the three stepped drops that carry the water from the yunga level at 1,840 m down to the high jungle at 946 m. The falls stand on the left bank of the Cutivireni River, and the last drop disappears into deep, still-unexplored sinkholes rather than joining the river directly. The surrounding Otishi National Park is ringed by 35 native communities, 20 on the Río Tambo side and 16 on the Echarate side.

The falls lie in Otishi National Park, in Río Tambo District, Satipo Province, Junín. The park is about 25 km from the town of Satipo, roughly an hour and a half away, and can only be reached by light aircraft. Access is partly restricted: overflying the falls requires a special permit from SERNANP, the national protected areas service.

The waterfall comprises three main sections with each individual drop exceeding 180 meters into the gorge below. This uncommon structure of multiple large plunges creates a rare geographical formation in the Andean region.