Helenesee is a lake in Brandenburg, Germany.

With a depth of 56.63 m, the Helenseee is the second deepest lake in Brandenburg, only surpassed by the lake Großer Stechlinsee.

It is situated approximately 8 kilometers in the south of Frankfurt (Oder).

It was formed after the flooding of a former open-pit mining which started in 1958.

This Brandenburg location article is a stub.