Lake Nero () is a lake located in Montalto Dora, Piedmont, Italy.
The lake, which lies in the comune of Montalto Dora, has a water surface area of 0.109 kmò, a basin area of 1.3 kmò, and is located at an altitude of 299 meters above sea level. It is part of a group of five lakes of glacial origin, which also include Lake Sirio, Lake Pistono, Lake Campagna and Lake San Michele.
The entire lake is surrounded by a trail.
The lake is part of the Site of Community Importance known as Laghi di Ivrea (code IT1110021), established under Directive 92/43/EEC (Habitats Directive) and designated as a Special Area of Conservation.