| Official Name: | Achacachi |
| Native Name: | Jach'ak'achi |
| Pushpin Map: | Bolivia |
| Pushpin Label Position: | bottom |
| Pushpin Map Caption: | Location in Bolivia |
| Subdivision Type: | Country |
| Subdivision Name: | Bolivia |
| Subdivision Type1: | Admin. division |
| Subdivision Name1: | La Paz Department |
| Subdivision Type2: | Province |
| Subdivision Name2: | Omasuyos Province |
| Subdivision Type3: | Municipality |
| Subdivision Name3: | Achacachi Municipality |
| Population As Of: | 2012 census |
| Population Total: | 8857 |
| Population Density Km2: | auto |
| Population Blank1 Title: | Ethnicities |
| Population Blank1: | Aymara |
| Timezone: | BOT |
| Utc Offset: | -4 |
| Coordinates: | -16.0444°N -68.685°W |
| Elevation M: | 3854 |
| Area Code: | (+591) 2 |
| Blank Name: | Climate |
| Blank Info: | ET |
Achacachi is a town on the Altiplano plateau in the South American Andes in the La Paz Department in Bolivia. It is the capital of the Omasuyos Province.
Achacachi, as an establishment, existed before the arrival of the Spaniards, as shown by descriptions that were made on "cronicas" and "relaciones" (official papers written by authorities) by royal or ecclesiastical Spanish authorities. Achacachi was the capital of a colla "señorio" called Pacasa, in the "Umasuyus" (from Aymara: "shore side") region, which was located alongside the East of Lake Intikjarka (Titicaca) in the Peru-Bolivian plateau.
Achacachi is at an elevation of 3,854 m or 12.647 feet amsl on the Achacachi peninsula on the eastern shores of Lake Titicaca, 96km (60miles) northwest of the capital La Paz.
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