Which saint is depicted riding a horse and slaying a dragon? 1. Which saint is pictured riding a horse and slaying a dragon?St. ValentineSt. GeorgeSt. MichaelSt. Francis of Assisi Loading... Share this:ShareFacebookTwitterPinterestLinkedIn Related Related posts: War Horse, the movie, starred a horse named what? Horse Q of the Day: Breyer Star Horse Q of the Day: Police Horses Horse Q of the Day: 1HP v 800HP?