Lycaena gorgon, known generally as the gorgon copper or stream water-crowfoot, is a species of copper in the butterfly family Lycaenidae.

The uppersides of males' wings are brown with purple sheen, while the upperside of female's wings are brown with yellow markings and black spots.

This butterfly is found in foothills, including chaparral, woodland, and canyons.

Its host plant is Eriogonum nudum, and adults feed on flowers of that plant in addition to a variety of others, including milkweed and Eriophyllum lanatum.

There is a single annual brood lasting between March and July.