Jauja is a city and capital of Jauja Province in Peru. It is situated in the fertile Mantaro Valley, 45 kilometres (28 mi) to the northwest of Huancayo, at an altitude of 3,400 metres (11,200 ft). Its population in 2015 was 15,432.

Jauja Province is a Peruvian province. It is one of the nine provinces of the Junín Region. To the north it borders with the Yauli, Tarma and Chanchamayo Provinces. To the east with the Satipo Province, to the south with the Concepción Province and to the west with the Lima Region. The capital of the Jauja Province is the city of Jauja. The city was founded by Francisco Pizarro as the first capital of Peru.