- Stonerville
2011 Producer
- Stan Helsing
2009 Kay
- Spanish Movie
2009 Doctor Nielsen
- An American Carol
2008 Osama Bin Nielsen / Grandpa
- Superhero Movie
2008 Uncle Albert Adams
- Slap Shot 3: The Junior League
2008 Mayor of Charlestown
- Music Within
2007 Bill Austin
- Family Guy Presents: Blue Harvest
2007 Dr. Rumack (archive voice)
- Scary Movie 4
2006 President Baxter Harris
- The Nutcracker and the Mouseking
2004 (Mouseking) (voice)
- Scary Movie 3
2003 President Harris
- Noël Noël
2003 Narrator (english version)
- Men with Brooms
2002 Gordon Cutter
- Chilly Dogs
2001 Clive Thorton / Cab Driver
- Camouflage
2001 Jack Potter
- 2001: A Space Travesty
2000 Marshal Richard "Dick" Dix
- Santa Who?
2000 Santa Claus
- Wrongfully Accused
1998 Ryan Harrison
- Safety Patrol!
1998 Mr. Penn
- Family Plan
1997 Harry Haber
- Mr. Magoo
1997 Mr. Quincy Magoo
- Leslie Nielsen's Stupid Little Golf Video
1997 Executive Co-Producer
- Pirates 4-D
1997 Captain Lucky
- Spy Hard
1996 Executive Producer
- Harvey
1996 Dr. Chumley
- Dracula: Dead and Loving It
1995 Count Dracula
- Rent-a-Kid
1995 Harry Haber
- Mr. Willowby's Christmas Tree
1995 Baxter
- S.P.Q.R.: 2,000 and a Half Years Ago
1994 Lucio Cinico
- Naked Gun 33⅓: The Final Insult
1994 Lt. Frank Drebin
- Leslie Nielsen's Bad Golf My Way
1994 Leslie Nielsen
- WWE SummerSlam 1994
1994 Himself
- Surf Ninjas
1993 Colonel Chi
- Digger
1993 Arthur Evrensel
- Leslie Nielsen's Bad Golf Made Easier
1993 Himself
- The Naked Gun 2½: The Smell of Fear
1991 Lt. Frank Drebin
- All I Want For Christmas
1991 Santa
- Chance of a Lifetime
1991 Lloyd Dixon
- Repossessed
1990 Father Jebedaiah Mayii
- The Railway Dragon
1989 Narrator (voice)
- The Naked Gun: From the Files of Police Squad!
1988 Frank Drebin
- Dangerous Curves
1988 Greg Krevske
- Nuts
1987 Allen Green
- Home Is Where the Hart Is
1987 Sheriff Nashville Schwartz
- Fatal Confession: A Father Dowling Mystery
1987 Senator Erdain
- Nightstick
1987 Thad Evans
- Soul Man
1986 Mr. Dunbar
- The Patriot
1986 Admiral Frazer
- Blade in Hong Kong
1985 Harry Ingersoll
- Striker's Mountain
1985 Jim McKay
- Reckless Disregard
1985 Bob Franklin
- Spaceship
1983 Capt. Jamieson
- Cave-In!
1983 Joe Johnson
- Wrong Is Right
1982 Mallory
- Creepshow
1982 Richard Vickers (segment "Something To Tide You Over")
- Foxfire Light
1982 Reece Morgan
- Twilight Theatre
1982
- Airplane II: The Sequel
1982 Dr. Rumack (archive footage) (uncredited)
- Airplane!
1980 Dr. Rumack
- Prom Night
1980 Mr. Hammond
- The Night the Bridge Fell Down
1980 Paul Warren
- OHMS
1980 Governor
- City on Fire
1979 Mayor William Dudley
- Institute for Revenge
1979 Counselor Hollis Barnes
- Riel
1979 Major Leif Newry Fitzroy Crozier
- Little Mo
1978 Nelson Fisher
- Day of the Animals
1977 Paul Jenson
- Viva Knievel!
1977 Stanley Millard
- The Amsterdam Kill
1977 Riley Knight
- Grand Jury
1977 John Williams
- The Dawson Patrol
1977 Narrator
- Sixth and Main
1977 John Doe
- Project: Kill
1976 John Trevor
- Brinks: The Great Robbery
1976 Agent Norman Houston
- The Outlaw Cats of Colossal Cave
1975 Narrator
- Can Ellen Be Saved?
1974 Arnold Lindsey
- The Letters
1973 Derek Childs
- Snatched
1973 Bill Sutter
- ...and millions will die!
1973 Jack Gallagher
- The Return of Charlie Chan
1973 Alexander Hadrachi
- Journey to the Outer Limits
1973 Narrator (voice)
- Amanda Fallon
1973 Mr. Cummings
- The Poseidon Adventure
1972 Captain Harrison
- The Resurrection of Zachary Wheeler
1971 Harry Walsh
- They Call It Murder
1971 Frank Antrim
- Incident in San Francisco
1971 Lt. Brubaker
- Night Slaves
1970 Sheriff Henshaw
- Hauser's Memory
1970 Joseph Slaughter
- The Aquarians
1970 Official
- Four Rode Out
1969 Mr Brown
- How to Commit Marriage
1969 Phil Fletcher
- Change of Mind
1969 Sheriff Webb
- Deadlock
1969 Lt. Sam Danforth
- Trial Run
1969 Jason Harkness
- How to Steal the World
1968 General Maximilian Harmon
- Dayton's Devils
1968 Frank Dayton
- Companions in Nightmare
1968 Dr. Neesden
- Shadow Over Elveron
1968 Sheriff Verne Drover
- The Wild Heart
1968 Narrator
- Cocoon
1968 Brent
- Code Name: Heraclitus
1967 Fryer
- The Reluctant Astronaut
1967 Major Fred Gifford
- Gunfight in Abilene
1967 Grant Evers
- Counterpoint
1967 Victor Rice
- Rosie!
1967 Cabot Shaw
- The Boy Who Flew with Condors
1967 Narrator
- Beau Geste
1966 Lt. De Ruse
- The Plainsman
1966 Col. George Armstrong Custer
- Dark Intruder
1965 Brett Kingsford
- Harlow
1965 Richard Manley
- Night Train to Paris
1964 Alan Holiday
- See How They Run
1964 Elliot Green
- The Velvet Alley
1959 Eddie Kirkley
- The Sheepman
1958 Stephen Bedford / Johnny Bledsoe
- Tammy and the Bachelor
1957 Peter Brent
- Hot Summer Night
1957 William Joel Partain
- Forbidden Planet
1956 Commander John J. Adams
- The Opposite Sex
1956 Steve Hilliard
- Ransom!
1956 Charlie Telfer
- The Vagabond King
1956 Thibault d'Aussigny
- The Battle of Gettysburg
1955 Narrator (voice)
- Dark Possession
1954 Dr. Roger Waring
- The Lost Will of Dr. Rant
1951 Bill
