Quillacollo is a province in the Cochabamba Department, Bolivia.

One of the highest peaks of the province is Tunari at 5,023 m (16,480 ft).

Other mountains are listed below:[1][2][3][4] The province is divided into five municipalities which are further subdivided into cantons.

The languages spoken in the Quillacollo Province are mainly Spanish and Quechua.

The following table shows the number of those belonging to the recognized group of speakers.