Sir Sidney Poitier, KBE (pronounced /ˈpwætɪeɪ/; born February 20, 1927) is an Bahamian-American actor, film director, author, and diplomat. He broke through as a star in acclaimed performances in American films and plays, which, by consciously defying racial stereotyping, gave a new dramatic credibility for black actors to mainstream film audiences in the Western world.

In 1963, Poitier became the first black man to win an Academy Award for Best Actor for his role in Lilies of the Field. The significance of this achievement was later bolstered in 1967 when he starred in three very well received films—To Sir, with Love; In the Heat of the Night; and Guess Who's Coming to Dinner—making him the top box office star of that year. In 1999, the American Film Institute named Poitier among the Greatest Male Stars of All Time, ranking 22nd on the list of 25.

Poitier has directed a number of popular movies such as Uptown Saturday Night, and Let's Do It Again (with friend Bill Cosby), and Stir Crazy (starring Richard Pryor and Gene Wilder). In 2002, 38 years after receiving the Best Actor Award, Poitier was chosen by the Academy of Motion Picture Arts and Sciences to receive an Honorary Award, designated "To Sidney Poitier in recognition of his remarkable accomplishments as an artist and as a human being."