Sean Patrick Flanery is an American actor. He is known for playing Connor MacManus in The Boondock Saints (1999) and its sequel The Boondock Saints II: All Saints Day (2009), Greg Stillson in the television series The Dead Zone, Jeremy "Powder" Reed in Powder (1995), Indiana Jones in the George Lucas television series The Young Indiana Jones Chronicles, as well as Bobby Dagen in Saw 3D (2010). He is also known for his role as Sam Gibson on the CBS soap opera The Young and the Restless in 2011. He starred in Devil's Carnival, a short film which was screened on tour beginning in April 2012.

The Boondock Saints is a 1999 American vigilante action thriller film written and directed by Troy Duffy in his feature directorial debut. Starring Willem Dafoe, Sean Patrick Flanery, Norman Reedus, David Della Rocco, and Billy Connolly, the film follows Irish fraternal twin brothers Connor and Murphy MacManus, who become vigilantes after killing two members of the Russian mafia in self defense. After both experience an epiphany, the twins, together with their best friend "Funny Man" Rocco (Rocco), set out on a mission to rid Boston of the criminal underworld in the name of God, all the while being pursued by FBI Special Agent Paul Smecker (Dafoe).