
Mars Callahan
Known for Acting · 12 credits
- Place of birth
- Studio City, California, U.S.
- Also known as
- Gregory Mars Martin
Biography
From Wikipedia, the free encyclopedia.
Mars Callahan (born 1971) is an American actor, director, producer and writer.
He is known, among other things, for the movie Poolhall Junkies where he served as director, actor and screenwriter.
At the age of eleven Callahan toured with a children's musical group through thirty-seven states. At fifteen he received his first acting role in the television series The Wonder Years. After honing his acting skills in television he tried for the big screen and soon appeared in various films. Inspired by the directors he worked with Callahan decided to try working behind the camera and in 1998 shot his first short film The Red Bag.
In a 2007 Hollywood Reporter interview he revealed that he has had serious health problems when doctors found a tumor in his right kidney. He lost his right kidney, his right adrenal gland and has been in and out of a wheelchair for years.
Known For
TV Shows (5)
Movies (7)

Kalifornia
1993
as Walter Livesy

That Thing You Do!
1996
as Ernie the Disc Master Engineer

Clifford
1994
as Brian

Poolhall Junkies
2002
as Johnny

Highway to Hell
1991
as State Policeman

The Children of Times Square
1986
as Brian (as Gregory 'Mars' Martin)

Dog Patrol: Operation Santa Paws
2025
as Agent Matters
About Mars Callahan
From Wikipedia, the free encyclopedia. Mars Callahan (born 1971) is an American actor, director, producer and writer. He is known, among other things, for the movie Poolhall Junkies where he served as director, actor and screenwriter. At the age of eleven Callahan toured with a children's musical group through thirty-seven states. At fifteen he received his first acting role in the television series The Wonder Years. After honing his acting skills in television he tried for the big screen and soon appeared in various films. Inspired by the di… With 12 credits spanning from 1979 to 2025, Mars Callahan has appeared in 7 films and 5 TV shows.
Fans searching for Mars Callahan movies, Mars Callahan filmography, or the latest projects starring Mars Callahan can stream many of these titles on Bowood.TV, free and in HD, with no subscription required.
Most Popular Mars Callahan Movies
- Kalifornia (1993) — as Walter Livesy
- That Thing You Do! (1996) — as Ernie the Disc Master Engineer
- Clifford (1994) — as Brian
- Poolhall Junkies (2002) — as Johnny
- Highway to Hell (1991) — as State Policeman
Where to Watch Mars Callahan Films
Most Mars Callahan movies and series are available to stream on Bowood.TV in full HD, completely free and without signup. Browse the complete filmography above to jump directly to any title. For more films and the latest web series featuring Mars Callahan, check our movies catalogue and browse page.




