Lake Zell (German: Zeller See; Italian: Lago di Zell) is a small freshwater lake in the Austrian Alps.

It takes its name from the city of Zell am See, which is located on a small delta protruding into the lake.

The water is very clear and suitable for swimming or diving, but can be chilly.

The southern end of the lake, near Schüttdorf, is shallower and mostly filled with water weed, making it unsuitable for boating or swimming.

The "Alpine Lake" can be seen from nearby ski trails.