The Critics' Choice Movie Award for Best Supporting Actor is one of the awards given by the Broadcast Film Critics Association at their annual Critics' Choice Movie Awards for a performance in a motion picture. It was first presented in 1995 with the winners being a tie between Ed Harris for Apollo 13 and Kevin Spacey for The Usual Suspects. There were no official nominees until 2001, currently six nominees are usually presented.

Cinderella Man is a 2005 American drama film directed by Ron Howard. The film stars Russell Crowe, Renée Zellweger and Paul Giamatti. It tells the true story of heavyweight boxing champion James J. Braddock, who was dubbed "The Cinderella Man" by journalist Damon Runyon. This is the second collaboration for Howard and Crowe, the first being A Beautiful Mind (2001).