Cast of Good Will Hunting

Matt Damon portrays Will Hunting, a troubled but brilliant young janitor at MIT with a gift for mathematics.

Robin Williams plays Sean Maguire, a psychologist and former classmate of Gerald Lambeau, who becomes Will's therapist.

Ben Affleck takes on the role of Chuckie Sullivan, Will's best friend and loyal South Boston buddy.

Stellan Skarsgård portrays Gerald Lambeau, a Fields Medal-winning professor at MIT who discovers Will's talent.

Minnie Driver plays Skylar, a Harvard student who enters a romantic relationship with Will.

Casey Affleck portrays Morgan O'Mally, one of Will's group of friends in South Boston.

Cole Hauser plays Billy McBride, another friend of Will's from South Boston.

Vik Sahay appears as an MIT Student who interacts with Will and his friends.

John Mighton takes on the role of Tom, one of the professors at MIT.

Rachel Majorowski portrays Krystyn, a young woman who catches the attention of Will and his friends.

Colleen McCauley plays Cathy, a member of the Barbershop Quartet.

Matt Mercier appears as a member of the Barbershop Quartet.