Lago, which means "lake" in Italian, Portuguese, and Spanish, may refer to:
Lago is a parish in Amares Municipality in the Braga District in Portugal. The population in 2011 was 1,910, in an area of 3.99 km².
Lago is a parish (administrative division) in Allande, a municipality within the province and autonomous community of Asturias, in northern Spain.
The elevation is 885 m (2,904 ft) above sea level. It is 33.91 km2 (13.09 sq mi) in size. The population is 26.