Robin Williams
Hunter "Patch" Adams
Monica Potter
Carin Fisher
Philip Seymour Hoffman
Mitch Roman
Daniel London
Truman Schiff
Harve Presnell
Dean Anderson
Barry Shabaka Henley
Emmet
Harold Gould
Arthur Mendelson
Steven Anthony Jones
Charlie
Jason Aaron Baca
Patch Pirate
Ismael 'East' Carlo
Hispanic Father
Andy Arness
Orderly (uncredited)