The Mountain Rat is a 1914 silent four-reel film directed by James Kirkwood for Biograph.

The film—described as "a drama of daring and romance in the Western wilds"[1]—is notable for being one of the biggest early screen appearances of actress Dorothy Gish.

[2] After an argument, Douglas Williams' fiancée, Harriet, returns the engagement ring.

Discouraged, he soon heads out west, where he meets and falls for a dancer named Nell, known as the Mountain Rat in a dance hall at a mining camp.

Nell has been shunned by the more "respectable" women of the community, but Douglas doesn't care; he marries her on the spur of the moment.