The Bat is a 1959 American crime-mystery thriller starring Vincent Price and Agnes Moorehead. It is the fourth film adaptation of the story, which began as a 1908 novel The Circular Staircase by Mary Roberts Rinehart, which she later adapted (with Avery Hopwood) into the 1920 play The Bat. The first film version of the play was the 1926 American silent film The Bat. The film version was adapted by playwright Crane Wilbur, who also directed.

The Bat was distributed in 1959 on a double bill with the British Hammer film The Mummy. Now in the public domain, The Bat is available for online download.