Quillacollo is a province in the Cochabamba Department, Bolivia. It is known for its festival in August where people from all over Bolivia come and pay homage to the Virgin of Urqupiña (Virgen de Urqupiña). Quillacollo is said to be one of the fastest-growing cities in Bolivia.

One of the highest peaks of the province is Tunari at 5,023 m (16,480 ft). Other mountains are listed below:

The province is divided into five municipalities which are further subdivided into cantons.

Section	Municipality	Seat
1st	Quillacollo Municipality	Quillacollo
2nd	Sipe Sipe Municipality	Sipe Sipe
3rd	Tiquipaya Municipality	Tiquipaya
4th	Vinto Municipality	Vinto
5th	Colcapirhua Municipality	Colcapirhua

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.

Language	Quillacollo Municipality	Sipe Sipe Municipality	Tiquipaya Municipality	Vinto Municipality	Colcapirhua Municipality
Quechua	52,399	23,819	19,308	18,630	18,050
Aymara	7,101	1,127	2,481	2,259	2,449
Guaraní	101	24	43	38	38
Another native	82	24	36	26	46
Spanish	93,131	23,059	32,704	26,355	38,441
Foreign	2,087	215	1,100	403	1,136
Only native	5,756	6,544	2,972	3,332	1,365
Native and Spanish	50,157	17,704	17,737	16,680	18,139
Only Spanish	43,003	5,358	15,000	9,684	20,314

• Ch'aki Mayu
• Inka Raqay
• Sayt'u Qucha
• Tunari National Park

17°20′S 66°15′W / 17.333°S 66.250°W / -17.333; -66.250