Pain & Gain is a 2013 American black comedy action crime film directed by Michael Bay and written by Christopher Markus and Stephen McFeely. It is based on a 1999 series of Miami New Times articles by Pete Collins about the activities of the Sun Gym gang, a group of bodybuilding ex-convicts convicted of kidnapping, extortion, torture, and murder in Miami in the mid-90's. It stars Mark Wahlberg, Dwayne Johnson, and Anthony Mackie as members of the gang, with supporting roles played by Tony Shalhoub, Ed Harris, Rebel Wilson, Rob Corddry and Ken Jeong. The title is a play on the fitness adage "no pain, no gain".

Pain & Gain premiered in Miami on April 11, 2013, before Paramount Pictures released it in theatres on April 26. The film received mixed reviews; it was praised for its script and performances, but criticized for its directing, historical inaccuracies, and overreliance on violence. A commercial success, it grossed $86 million worldwide against a $26 million production budget. Marc Schiller, the Sun Gym gang's primary victim who was depicted in the film as Victor Kershaw, sued the production company over his portrayal.