Leslie Carlson
- At Risk
2010 George Finlay
- Babar and the Adventures of Badou
2010 (voice)
- Haven
2010 Vaughn Carpenter
- Lost Girl
2010 Cole
- Rookie Blue
2010 Clarence Hodgson
- Looking for Angelina
2005 Justice Britton (as Les Carlson)
- Snow
2004 Chester
- This Is Wonderland
2004 (as Les Carlson)
- Left Behind II: Tribulation Force
2002 Witness Eli
- Sue Thomas: F.B.Eye
2002 Mr. Weaver
- Stolen Miracle
2001 Mr. Neelandson
- Bailey's Mistake
2001 Stableman
- Harlan County War
2000 Udell
- Camera
2000 The Actor
- Preludes
2000 The Actor
- The Last Debate
2000 Pat Tubbs
- Catch a Falling Star
2000 Man at Train Station
- The Wishing Tree
1999 Professor
- Moonshine Highway
1996 Pappy
- Beyond the Call
1996 Dan
- A Stranger in the Mirror
1993 Harry Durkin
- Morning Glory
1993 Howard Pride
- The X-Files
1993 Dr. Troisky
- Dead Ahead: The Exxon Valdez Disaster
1992 Theo Polasek
- Impolite
1992 Billy
- To Grandmother's House We Go
1992 Doorman
- Highlander: The Series
1992 Sam Thompson
- Chaindance
1991 Willy
- The Girl From Mars
1991 Mr. Sharbut
- K2
1991 Dexter
- Looking for Miracles
1989 Principal
- War of the Worlds
1988 Detective
- Rolling Vengeance
1987 Misty's Father
- Street Smart
1987 Marty
- The Lawrenceville Stories
1987 Conover
- 21 Jump Street
1987 Professor Gray
- The Fly
1986 Dr. Cheevers
- Young Again
1986 Mr. Dillon
- Unnatural Causes
1986 Bob
- The Twilight Zone
1985 Holsen
- MacGyver
1985 Sparky
- That's My Baby!
1984
- Videodrome
1983 Barry Convex
- A Christmas Story
1983 Christmas Tree Man
- The Dead Zone
1983 Brenner
- Shock-Trauma
1982 Elton Bates
- American Playhouse
1982 Conover
- Escape from Iran: The Canadian Caper
1981 L. Bruce Laingen
- Mr. Patman
1981 Mr. Abernathy
- Circle of Two
1981 Doctor at the Hospital
- Improper Channels
1981 Bucci
- Nothing Personal
1980 Marshal #2
- Lost and Found
1979 Jean-Paul
- High-Ballin'
1978 Bud
- Who Has Seen the Wind
1977 Joe Pivott
- Deadly Harvest
1977 The Minister
- Raku Fire
1977
- Shoot
1976 Jim
- The New Avengers
1976 Douglas Collings
- Teleplay
1976 Tony
- Black Christmas
1974 Graham
- Deranged
1974 Tom Sims
- McQ
1974 Radical (uncredited)
- The Neptune Factor
1973 Brigs, Triton Radioman
- The Hard Part Begins
1973 Mechanic
- The Collaborators
1973 Detective Kaminski
