Robert Farrelly (born June 17, 1958) is an American film director, screenwriter, and producer. He is one of the Farrelly brothers, along with his brother Peter, with whom they are known for directing and producing successful box office comedies, including Dumb and Dumber (1994), There's Something About Mary (1998), Me, Myself & Irene (2000), Shallow Hal (2001), and the 2007 remake of Knocked Up. He made his solo directorial debut in 2023 with the film Champions.

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