Terrence Stephen McQueen (March 24, 1930 – November 7, 1980) was an American actor. His antihero persona, emphasized during the height of 1960s counterculture, made him a top box office draw for his films of the late 1950s to the mid-1970s. He was nicknamed the "King of Cool" and used the alias "Harvey Mushman" when participating in motor races.

McQueen received an Academy Award nomination for his role in The Sand Pebbles (1966). His other popular films include The Cincinnati Kid (1965), Nevada Smith (1966), The Thomas Crown Affair (1968), Bullitt (1968), The Getaway (1972) and Papillon (1973), in addition to ensemble films such as The Magnificent Seven (1960), The Great Escape (1963), and The Towering Inferno (1974). He became the world's highest-paid movie star in 1974; however, afterwards he did not appear in a film for another four years. Although he was combative with directors and producers, his popularity placed him in high demand and enabled him to negotiate the largest salaries.

Diagnosed with terminal cancer, McQueen flew to Mexico in October 1980 for surgery to remove or reduce tumors in his neck and abdomen, against the advice of U.S. doctors who warned him that his cancer was inoperable and that his heart could not withstand the surgery. A few weeks later he checked in to a hospital in Ciudad Juárez under a fake name and underwent surgery by hospital staff who were unaware of his true identity. A few hours after surgery, he died of a heart attack at the age of 50.

Terrence Stephen McQueen was born at St. Francis Hospital in Beech Grove, Indiana, on March 24, 1930, the son of Julia Ann (or Julianne) Crawford and flying circus stunt pilot William McQueen. He was of Scottish descent and grew up in a Catholic household. He was raised by his mother, who was abandoned by his father six months after they met. Several biographers have stated that his mother was an alcoholic. Unable to cope with caring for him, she decided in 1933 to leave him with her parents Lillian and Victor in Slater, Missouri. As the Great Depression worsened, McQueen and his grandparents moved in with Lillian's brother Claude and his family at their farm in Slater. McQueen later said that he had good memories of living on the farm, noting that his great-uncle Claude was a "very good, very strong, [and] very fair" man from whom he "learned a lot".

Claude gave McQueen a red tricycle on his fourth birthday, which McQueen subsequently credited with sparking his early interest in car racing. His mother, who had since married, brought McQueen from the farm to live with her and his stepfather in Indianapolis when he was eight years old. He later recalled, "The day I left the farm, Uncle Claude gave me a personal going-away present—a gold pocket watch, with an inscription inside the case." The inscription read: "To Steve, who has been a son to me." Dyslexic and partially deaf due to a childhood ear infection, McQueen did not adjust well to school or his new life, and his stepfather beat him to such an extent that he left home to live on the streets at the age of nine. He later said, "When a kid doesn't have any love when he's small, he begins to wonder if he's good enough. My mother didn't love me, and I didn't have a father. I thought, 'Well, I must not be very good.'"

Julia wrote to Claude when McQueen was 12, asking that he be returned to her again to live in Los Angeles, where she now lived with her second husband. By McQueen's own account, he and his new stepfather "locked horns immediately". McQueen recalls him being "a prime son of a bitch" who was not averse to beating both McQueen and Julia. McQueen began to rebel again and was sent back to live with Claude for a final time. At age 14, he left Claude's farm without saying goodbye and joined a circus for a short time. He drifted back to his mother and stepfather in Los Angeles, resuming his life as a gang member and petty criminal. He was caught stealing hubcaps by the police and handed over to his stepfather, who beat him severely and threw him down a flight of stairs. McQueen looked up at his stepfather and said, "You lay your stinking hands on me again and I swear I'll kill you."

After this incident, McQueen's stepfather persuaded his mother to sign a court order saying that McQueen was incorrigible, remanding him to the California Junior Boys Republic in Chino Hills. Steve began to change and mature there, but was not popular with the other boys at first: "Say the boys had a chance once a month to load into a bus and go into town to see a movie. And they lost out because one guy in the bungalow didn't get his work done right. Well, you can pretty well guess they're gonna have something to say about that. I paid my dues with the other fellows quite a few times. I got my lumps, no doubt about it. The other guys in the bungalow had ways of paying you back for interfering with their well-being."

McQueen gradually became a role model and was elected to the Boys Council, a group that set the rules and regulations governing the boys' lives. He left the Boys Republic at age 16. When he later became famous as an actor, he regularly returned to talk to resident boys and retained a lifelong association with the center. At age 16, he returned to live with his mother, who had since moved to New York City's Greenwich Village. He met two sailors from the Merchant Marine there and decided to sign on to a ship bound for the Dominican Republic. Once there, he abandoned his new post and was eventually employed at a brothel. He later ventured to Texas and drifted from job to job, including selling pens at a traveling carnival and working as a lumberjack in Canada. Upon his arrest for vagrancy in the Deep South, he served a 30-day assignment on a chain gang.