Lago Puelo is a town located in the Chubut Province, Argentina, 5 kilometers (3.1 mi) north from Puelo Lake and the Lago Puelo National Park, and 15 km (9.3 mi) south from El Bolsón. With a population of 3,129 inhabitants in 2010, it is one of the towns that forms La Comarca Andina del Paralelo 42 (Andean Region of the 42nd parallel), an organization which includes towns and rural areas in or near the Andes and clustered around the 42nd parallel of latitude in Argentina.

With a population in constant growth due to the migration from larger cities in Argentina, this small town also offers a wide variety of artisans that display their crafts in the local fair of El Bolsón, or in the annual Forest Festival (Spanish: La Fiesta Del Bosque) which is usually held during January or February.

Many of the town's inhabitants are native "porteños", i.e. people from Buenos Aires.