Olympia Dukakis (অলিম্পিয়া ডুকাকিস) was an American actress. She performed in more than 130 stage productions, in some 60 films, and in approximately 50 television series. Best known as a screen actress, she started her career in theater. Not long after her arrival in New York City, she won an Obie Award for Best Actress in 1963 for her off-Broadway performance in Bertolt Brecht's Man Equals Man.

She later moved to film acting and won an Academy Award and a Golden Globe, among other accolades, for her performance in Moonstruck (1987). She received another Golden Globe nomination for Sinatra (1992) and Emmy Award nominations for Lucky Day (1991), More Tales of the City (1998) and Joan of Arc (1999). Dukakis's autobiography, Ask Me Again Tomorrow: A Life in Progress, was published in 2003. In 2018, a feature-length documentary about her life, titled Olympia, was released theatrically in the United States.

Olympia married Yugoslav-American actor Louis Zorich in 1962. The New York-based couple went on to co-found The Whole Theatre Company in Montclair, New Jersey, and ran the company for 19 years (1971-1990). As actress, director, producer and teacher, she still found the time to raise their three young children. She also became a master instructor at New York University for fourteen years. She scored theater triumphs in "A Man's a Man," for which she won an Off-Broadway Obie Award in 1962; several productions of "The Cherry Orchard" and "Mother Courage"; "Six Characters in Search of an Author"; "The Rose Tattoo"; "The Seagull"; "The Marriage of Bette and Boo" (another Obie Award); and, more notably, her many performances as the title role in "Hecuba." A good portion of her successes was launched within the walls of her own theater company, which encouraged the birth of new and untried plays.