Michael Sylvester Gardenzio Stallone (; born July 6, 1946) is an American actor, director producer and filmmaker. He is well known for his Hollywood action roles, including boxer Rocky Balboa in the Rocky series' seven films from 1976 to 2015; soldier John Rambo in the four Rambo films, released between 1982 and 2008; and Barney Ross in the three The Expendables films from 2010 to 2014. Stallone wrote or co-wrote most of the 14 films in all three franchises, and directed many of the films.

Stallone's film Rocky was inducted into the National Film Registry, and had its props placed in the Smithsonian Museum. His use of the front entrance to the Philadelphia Museum of Art in the Rocky series led the area to be nicknamed the Rocky Steps, and Philadelphia has a statue of his Rocky character placed permanently near the museum. It was announced on December 7, 2010 that Stallone was voted into the International Boxing Hall of Fame in the non-participant category.

In 1977, Stallone was nominated for two Academy Awards for Rocky, Best Original Screenplay and Best Actor. He became the third man in history to receive these two nominations for the same film, after Charlie Chaplin and Orson Welles. Stallone received positive reviews, as well as his first Golden Globe Award win and a third Academy Award nomination, for reprising the role of Rocky Balboa in Ryan Coogler's 2015 film Creed.