Calcasieu Lake is a brackish lake located in southwest Louisiana, United States, located mostly within Cameron Parish.

The lake is the natural outlet of the Calcasieu River.

Commercial traffic uses the Calcasieu Ship Channel that runs down the west side of lake Charles and on the southern end splits Lake Charles from West Cove (with Rabbit Island) and exits the lake passing St Johns Island.

[3] On June 24, 2007, a rare albino "pink" bottlenose dolphin, Pinky, was spotted by a charter fishing-boat captain based in Lake Charles.

This Louisiana state location article is a stub.