The main cast of the 1997 film "Good Will Hunting" includes:

• Matt Damon as Will Hunting
• Robin Williams as Dr. Sean Maguire
• Ben Affleck as Chuckie Sullivan
• Stellan Skarsgård as Professor Gerald Lambeau
• Minnie Driver as Skylar Satenstein
• Casey Affleck as Morgan O'Mally
• Scott William Winters as Clark

The film was directed by Gus Van Sant and written by Matt Damon and Ben Affleck. It is a drama about a janitor named Will Hunting, a mathematical genius discovered by a professor at MIT. The film received critical acclaim and won Academy Awards for Best Supporting Actor for Robin Williams and Best Original Screenplay for Damon and Affleck.