Submarine is a 1928 synchronized sound drama film directed by Frank Capra.

While the film has no audible dialog, it was released with a synchronized musical score with sound effects using the sound-on-film Western Electric Sound System process.

This was Columbia's second sound feature following the success of The Scarlet Lady.

Two sailor buddies have their friendship torn apart after the woman they both are in love with chooses one over the other.

Complete copies of the film are held at the Library of Congress, the Filmmuseum, and the Cineteca Nazionale.