Actor
- Roman Polanski: Wanted and Desired (2008) .... Himself / Jack Gittes (archive footage)
- Premio Donostia a Meryl Streep (2008) .... Mark Forman (archive footage)
- Strictly Courtroom (2008) .... Col. Nathan R. Jessep (archive footage) (uncredited)
- Oscar, que empiece el espectáculo (2008) .... Himself (archive footage) (uncredited)
- The Bucket List (2008) .... Edward Cole
- The O'Reilly Factor Episode dated 3 March 2008 (2008) .... Himself / Various characters (archive footage)
- Cannes, 60 ans d'histoires (2007) .... Himself (archive footage)
- The World Awaits: De La Hoya vs. Mayweather (2007) .... Himself - Audience Member (uncredited)
- The Departed (2006) .... Frank Costello
- Shelter from the Storm: A Concert for the Gulf Coast (2005) .... Himself
- ... A Father... A Son... Once Upon a Time in Hollywood (2005) .... Himself (archive footage)
- The Kennedy Center Honors: A Celebration of the Performing Arts (2004) ....
- 101 Biggest Celebrity Oops (2004) .... Himself - #68: Box Office Hit to Box Office Flop (archive footage)
- Biography Jack Nicholson: The Joker Is Wild (2004) .... Himself (archive footage)
- Something's Gotta Give (2003) .... Harry Sanborn
- Anger Management (2003) .... Dr. Buddy Rydell
- Cher: The Farewell Tour (2003) .... Daryl Van Horne (archive footage)
- The Kid Stays in the Picture (2003) .... Himself (archive footage)
- About Schmidt (2002) .... Warren Schmidt
- Afterthoughts (2002) .... David
- Playboy: Inside the Playboy Mansion (2002) .... Himself
- America: A Tribute to Heroes (2001) .... Himself
- The Pledge (2001) .... Jerry Black
- AFI Life Achievement Award: A Tribute to Barbra Streisand (2001) .... Himself
- Schlock! The Secret History of American Movies (2001) .... Lt. Andre Duvalier (archive footage)
- Stanley Kubrick: A Life in Pictures (2001) .... Himself
- Hollywood Rocks the Movies: The Early Years (2000) .... Himself (preproduction footage of 'Head (1968)') (uncredited)
- Bravo Profiles: The Entertainment Business (1998) .... Himself
- Junket Whore (1998) .... Himself
- Warner Bros. 75th Anniversary: No Guts, No Glory (1998) .... Himself (archive footage) (uncredited)
- ... y otras mujeres de armas tomar (1998) .... Himself (archive footage)
- As Good as It Gets (1997) .... Melvin Udall
- Blood and Wine (1997) .... Alex Gates
- Hey, Hey We're the Monkees (1997) .... Himself (archive footage) (uncredited)
- Getting the Goods on 'As Good As It Gets' (1997) .... Narrator
- The Evening Star (1996) .... Garrett Breedlove
- Mars Attacks! (1996) .... President James Dale / Art Land
- The Crossing Guard (1995) .... Freddy Gale
- The 67th Annual Academy Awards (1995) .... Himself - Presenter: Honorary Award to Michelangelo Antonioni
- Rolling Stones: Stripped (1995) .... Himself
- Wolf (1994) .... Will Randall
- Fallen Champ: The Untold Story of Mike Tyson (1993) .... Himself (archive footage)
- The Who's Tommy, the Amazing Journey (1993) .... The Specialist (archive footage)
- The Making of '...And God Spoke' (1993) .... Himself [at the Academy Awards Ceremony] (archive footage)
- Hoffa (1992) .... James R. 'Jimmy' Hoffa
- A Few Good Men (1992) .... Col. Nathan R. Jessep
- Man Trouble (1992) .... Eugene Earl Axline, aka Harry Bliss
- Ca détourne (1992) .... (archive footage)
- The Two Jakes (1990) .... J.J. 'Jake' Gittes
- The 62nd Annual Academy Awards (1990) .... Himself - Co-presenter: Best Picture
- Batman (1989) .... Joker / Jack Napier
- The 60th Annual Academy Awards (1988) .... Himself - Nominee: Best Actor in a Leading Role
- Broadcast News (1987) .... Bill Rorich
- The Witches of Eastwick (1987) .... Daryl Van Horne
- Ironweed (1987) .... Francis Phelan
- How the Rhinoceros Got His Skin and How the Camel Got His Hump (1987) .... Himself - Narrator (voice)
- One Voice (1986) .... Himself / Audience Member (uncredited)
- Heartburn (1986) .... Mark Forman
- Elephant's Child (1986) .... Narrator (voice)
- Live Aid (1985) .... Himself
- Prizzi's Honor (1985) .... Charley Partanna
- Terror in the Aisles (1984) .... Jack Torrance (The Shining) (archive footage)
- Terms of Endearment (1983) .... Garrett Breedlove
- The Border (1982) .... Charlie Smith
- Ragtime (1982) .... Pirate at Beach (uncredited)
- Reds (1981) .... Eugene O'Neill
- The Postman Always Rings Twice (1981) .... Frank Chambers
- Notre Dame de la Croisette (1981) .... Star of 'The Postman Always Rings Twice' (uncredited)
- The Shining (1980) .... Jack Torrance
- Making 'The Shining' (1980) .... Himself
- Goin' South (1978) .... Henry Lloyd Moon
- Ride in the Whirlwind (1978) .... Wes
- America at the Movies (1977) .... Jonathan Fuerst / Robert Eroica Duprea (archive footage)
- Jimmy Carter's Inaugural Gala (1977) .... Himself
- The Last Tycoon (1976) .... Brimmer
- The Missouri Breaks (1976) .... Tom Logan
- One Flew Over the Cuckoo's Nest (1976) .... Randle Patrick McMurphy
- The Fortune (1975) .... Oscar Sullivan aka Oscar Dix
- Professione: reporter (1975) .... David Locke
- Tommy (1975) .... The Specialist
- Chinatown (1974) .... J.J. 'Jake' Gittes
- The Last Detail (1973) .... SM1 Billy 'Bad Ass' Buddusky
- The King of Marvin Gardens (1972) .... David Staebler
- Carnal Knowledge (1971) .... Jonathan Fuerst
- A Safe Place (1971) .... Mitch
- Chronicles: Van's Last Performance (1971) .... Himself
- Five Easy Pieces (1970) .... Robert Eroica Dupea
- On a Clear Day You Can See Forever (1970) .... Tad Pringle
- The Rebel Rousers (1970) .... Bunny
- Easy Rider (1969) .... George Hanson
- Head (1968) .... Himself (uncredited)
- Targets (1968) .... Actor in scenes from 'The Terror' (archive footage) (uncredited)
- Psych-Out (1968) .... Stoney
- The St. Valentine's Day Massacre (1967) .... Gino, Hit Man (uncredited)
- Hells Angels on Wheels (1967) .... Poet
- The Shooting (1967) .... Billy Spear
- Ensign Pulver (1964) .... Dolan
- The Terror (1964) .... Lt. Andre Duvalier
- Back Door to Hell (1964) .... Burnett
- Flight to Fury (1964) .... Jay Wickham
- The Raven (1963) .... Rexford Bedlo
- The Broken Land (1962) .... Will Brocious
- Little Amy (1962) .... Jefferson City Coach
- The Little Shop of Horrors (1960) .... Wilbur Force
- The Wild Ride (1960) .... Johnny Varron
- Studs Lonigan (1960) .... Weary Reilly
- Too Soon to Love (1960) .... Buddy
- The Cry Baby Killer (1958) .... Jimmy Wallace
- The Two Jakes (1990) ....
- Goin' South (1978) ....
- Drive, He Said (1971) ....
- The Terror (1964) .... (uncredited)
- Biography Jack Nicholson: The Joker Is Wild (2004) .... producer
- The Two Jakes (1990) .... producer (uncredited)
- Ride in the Whirlwind (1978) .... producer
- Drive, He Said (1971) .... producer
- Head (1968) .... producer
- The Shooting (1967) .... producer
- Eyeball Eddie (2000) .... film mentor
- Into the Wild (2007) .... thanks
- AFI's 100 Years... 100 Passions (2003) .... thanks
- E! True Hollywood Story (1996) .... special thanks (1 episode, 2005)
- Ride in the Whirlwind (1978) ....
- Drive, He Said (1971) ....
- Head (1968) .... (written by)
- The Trip (1967) .... (written by)
- Flight to Fury (1964) .... writer
- Thunder Island (1963) ....



Sophiaay...
virgil
Chand
LonnieRa...
Richard
rjward