Peñamiller is a municipality in the central Mexican state of Querétaro. The seat is at Peñamiller. The town of Peñamiller is the local governing authority for over 160 communities, which together make up a territory of 694.902 km2. The municipality borders the municipalities of Pinal de Amoles, Tolimán and Cadereyta de Montes on the south and east sides and with the municipalities of Xichú, Atarjea, and Catarina of the state of Guanajuato on the north and west sides.