Jach'a Pukara, Mountain summit in Larecaja Province, Bolivia.

Jach'a Pukara is a mountain in the Andes of Bolivia, about 4,300 metres high, in the La Paz Department, Larecaja Province, Sorata Municipality. It lies between Lake Titicaca to the west and the Janq'u Uma-Illampu massif of the Cordillera Real to the east.

The name is Aymara: jach'a means big and pukara means fortress, giving "big fortress"; the Hispanicized form Jachcha Pucara is also used. The sources record no fortress on the summit itself, so the name is the main historical evidence attached to the mountain, which lies in Sorata Municipality, Larecaja Province, La Paz Department.

The name Jach'a Pukara comes from Aymara: jach'a means big and pukara means fortress, so it reads as "big fortress", though the peak itself is a mountain and not a fort. Its Hispanicized spelling is Jachcha Pucara, the form found on some maps and documents.

Climbing this summit requires careful preparation for high-altitude conditions and rugged mountain terrain that changes significantly with the seasons. Visitors should plan for extended time at elevation and be ready for sudden weather changes typical of high Andean peaks.

The Aymara name Jach'a Pukara means "big fortress", though the peak is a natural summit rather than a built stronghold; Hispanicized records also spell it Jachcha Pucara. It stands in Sorata Municipality, Larecaja Province, La Paz Department, roughly 4,300 m high, between Lake Titicaca to the west and the Janq'u Uma-Illampu massif of the Cordillera Real to the east.