Valle de Lago is one of fifteen parishes (administrative divisions) in Somiedo, a municipality within the province and autonomous community of Asturias, in northern Spain.

It is situated at an elevation of 1,250 m (4,100 ft) above sea level. It is 29.76 km² (11.49 sq mi) in size, with a population of 118 (INE 2006). The postal code is 33840.

43°04′00″N 6°12′00″W / 43.066667°N 6.2°W / 43.066667; -6.2