The Trey o' Hearts is a 1914 American 15-chapter action film serial directed by Wilfred Lucas and Henry MacRae.

It was written by Allan Dwan and Bess Meredyth, based on a story of the same name by Louis Joseph Vance.

Some sources list Lon Chaney in the cast (uncredited), but this is disputed and unconfirmed.

Judith's twin sister Rose (also played by Cleo Madison) is in love with Alan.

Unbeknownst to Alan, Judith takes Rose's place and nurses him back to health.