Cass Timberlane is a 1947 American romantic drama film directed by George Sidney and starring Spencer Tracy, Lana Turner and Zachary Scott.

Judge Cass Timberlane is a middle-aged, incorruptible, highly respected man who enjoys good books and playing the flute.

David Ogden Stewart, who worked on the script, recalled: Spencer Tracy was a terribly professional actor who worked on the script and knew it by heart, and Lana’d come onto the set not having the foggiest idea what the thing was about, not knowing the lines or anything.

The song "Cleo the Cat" by the band Benton Harbor Lunchbox was inspired by the novel Cass Timberlane: A Novel of Husbands and Wives.

Though it received tepid critical reviews, the film was a box office hit, earning $3,983,000 in the U.S. and Canada and $1,203,000 elsewhere, but because of its high production cost, it returned a profit of only $746,000.