Robert Leo Farrelly Jr. is an American film director, screenwriter and producer. He is one of the Farrelly brothers, alongside his brother Peter, and together are known for directing and producing quirky, slightly offensive comedy films such as Dumb and Dumber, Shallow Hal, Me, Myself and Irene, There's Something About Mary, and the 2007 remake of The Heartbreak Kid. He made his solo directorial debut in 2023 with Champions.

Peter Farrelly and Bobby Farrelly, collectively referred to as the Farrelly brothers, are American screenwriters and directors. They have made eleven films together, including Dumb and Dumber, Outside Providence, and There's Something About Mary.