Submarine Patrol is a 1938 film directed by John Ford.

The screenplay was by Rian James, Darrell Ware, and Jack Yellen.

The film starred Richard Greene, Nancy Kelly and Preston Foster.

The supporting cast features George Bancroft, Elisha Cook, Jr., John Carradine, Maxie Rosenbloom, Jack Pennick, Ward Bond[2] and an unbilled Lon Chaney Jr. as a Marine sentry.

[3] The film was based on the book The Splinter Fleet of the Otranto Barrage by Ray Millholland.