King of Gamblers is a 1937 American crime film directed by Robert Florey and starring Claire Trevor, Lloyd Nolan and Buster Crabbe.

Akim Tamiroff takes an unusual featured role as a slot-machine racketeer whose bombing of an uncooperative barber shop leads to a murder charge.

(The film was also known as Czar of the Slot Machines.)

By her own account, silent film star Louise Brooks played a bit part in the film for Florey, who "specialised in giving jobs to destitute and sufficiently grateful actresses", referring both to herself and to Evelyn Brent.

This 1930s crime film-related article is a stub.