Released: 2011

Age rate: TV-MA

Cast: Tommy Flanagan, Mark Boone Junior, Charlie Hunnam, Ron Perlman, Kim Coates, Theo Rossi, William Lucking, Dayton Callie, Katey Sagal, Ryan Hurst, Maggie Siff

Production: Filmworks/FX

The fourth season of the American television drama series Sons of Anarchy premiered on September 6, 2011, and concluded on December 6, 2011, after 14 episodes aired on cable network FX. Created by Kurt Sutter, it is about the lives of a close-knit outlaw motorcycle club operating in Charming, a fictional town in California's Central Valley. The show centers on protagonist Jackson "Jax" Teller (Charlie Hunnam), the then–vice president of the club, and is first shown as the new president here, who begins questioning the club and himself.

It is the longest season of Sons of Anarchy and the only season to have 14 episodes, as every other season had 13 episodes. The season premiere ("Out") was written by series creator and executive producer Kurt Sutter and was one of the highest-rated telecasts in FX's history.