Cajatambo is one of nine provinces in the Lima Region of Peru. It is bordered to the north by the Ancash Region, to the east by the Huánuco Region, to the south by the province of Oyón, and to the west by the province of Huaura.

From 1851 to 1916 Cajatambo was part of Ancash Region and also included the areas of the provinces of Bolognesi and Ocros, which remained in that region. Bolognesi, including Ocros until 1990, split from Cajatambo in 1903; in 1916 Cajatambo was given to Lima Region.

The Waywash mountain range traverses the province. Some of the highest mountains of the province are listed below:

The province is divided into five districts:

• Cajatambo
• Copa
• Gorgor
• Huancapón
• Manas

The province has a population of approximately 10,000 people.

The capital of the province is the city of Cajatambo.

Historically, the principal products of the province have been cattle and sheep, although cochineal is also produced in the area.

• Quyllurqucha

• (in Spanish) www.cajatambo.com

10°20′08″S 76°50′03″W / 10.33556°S 76.83417°W / -10.33556; -76.83417