Lake Fundeni is a man-made lake on the Colentina River in Bucharest, Sector 2. It has a surface of 35 ha (86 acres), length of 2.1 km (1.3 mi), width of 200–800 m, a depth between 1 and 5 meters, and a volume of 800,000 m (1,000,000 cu yd).

In the middle of the lake there is an island with a surface area of 3.16 ha (7.8 acres). Upstream, to the west, is Lake Colentina [ro], and downstream, to the east, is Lake Dobroești [ro].