G.I. Joe: Retaliation is a 2013 American military science fiction action film based on the G.I. Joe toy line. It is the second installment in the G.I. Joe film series and the sequel to G.I. Joe: The Rise of Cobra (2009). Directed by Jon M. Chu and written by the writing team of Rhett Reese and Paul Wernick, the film features an ensemble cast with Lee Byung-hun, Ray Park, Jonathan Pryce, Channing Tatum, and Arnold Vosloo reprising their roles from the previous film, while Luke Bracey and Robert Baker take over the role of Cobra Commander, replacing Joseph Gordon-Levitt, and D. J. Cotrona, Adrianne Palicki, Ray Stevenson, Bruce Willis, and Dwayne Johnson round out the principal cast. In the film, heavy machine gunner Roadblock (Johnson), along with the surviving G.I. Joes, exacts vengeance on Cobra for his intelligence and infantry specialist Duke (Tatum) and their comrades' deaths, after a Pakistan incident involving nuclear warheads in which the Joes become traitors.

G.I. Joe is an American media franchise and a line of action figures owned and produced by the toy company Hasbro. The initial product offering represented four of the branches of the U.S. armed forces with the Action Soldier, Action Sailor, Action Pilot, Action Marine and later on, the Action Nurse. The name is derived from the usage of "G.I. Joe" for the generic U.S. soldier, itself derived from the more general term "G.I.". The development of G.I. Joe led to the coining of the term "action figure". G.I. Joe's appeal to children has made it an American icon among toys.