Gutiérrez Lake, Glacial lake in northern Patagonia, Argentina.

Gutiérrez Lake is a moraine-dammed glacial lake of about 1,640 hectares in the Bariloche Department of Río Negro Province. It fills a valley enclosed by the Otto, Catedral and De la Ventana hills, open to the north toward the Nahuel Malal pampa and to the east toward the semi-steppe plains of Pampa de Huenuleo. It drains through the Gutiérrez stream into Nahuel Huapi Lake.

Explorer Francisco P. Moreno named this lake to honor Juan María Gutiérrez, his academic mentor who contributed to Argentina's scientific progress. The naming reflects the importance of scientific mentorship during the country's development in the 1800s.

The lake's name comes from Juan María Gutiérrez, honoured by Francisco P. Moreno; the Tehuelche first called it "Ojo de Dios" and the Mapuche Carre Lauquen, "green lake". Villa Los Coihues on the north shore, named after the coihue (Nothofagus dombeyi), holds the "Dr. Rosendo Pascual" geological and palaeontological museum with a collection of rocks and fossils.

The lake is accessible from Bariloche via Route 40, with several beaches and camping facilities available along the shore. Visit during warmer months when mountain roads are in good condition and weather allows for safe exploration.

Gutiérrez Lake is a moraine-dammed lake whose surface temperature averages about 7 °C, cold enough that bathers risk hypothermia. It also draws kelp gulls and blue-eyed cormorants, birds otherwise strictly marine, and holds rainbow, brown and brook trout.