Mark Costello
Known for Acting · 32 credits
- Place of birth
- St. Louis, Missouri, United States
Biography
Mark began working professionally in Los Angeles back in 1983, when he booked his first job as the "Starter" in, Hot Dog...the Movie". He continued working numerous Co-Star and Guest spots on episodic TV such as, "Murder She Wrote, "Dynasty," Knots Landing," "Who's the Boss," "LA Law," "Full House", "Seventh Heaven," "ER," "N.Y.P.D. Blue," "The West Wing," and "Criminal Minds." Mark also had recurring roles on such television shows as, "Bay City Blues," "JAG", and "First Monday." In 1990, Mark had a three year contract on the FOX youth oriented drama, "Tribes". Mark was very established in the theatre world in Los Angeles, having won Best Actor in a Feature Role from Stage Scene LA, for his performances in,"Finding Fossils" and "John is a Father" at The Road Theatre, as well as "Mom's Dead", at Sacred Fools. Mark appeared with Susan Sullivan and David Selby in Edward Albee's, "A Delicate Balance," at the Odyssey Theatre , which won the LA Drama Critics Circle McCulloh Award for Best Revival. Mark moved to Atlanta in 2017 and has appeared in the films, "Yes, God, Yes," "Our Friend" and the independent feature film, "Charles Sloan", which he played the title role, and which won For Best Full Length Feature Film at the 2022 Raleigh Film and Arts Festival.
Known For
TV Shows (17)

ER
1994
as Kevin Halloran

JAG
1995
as Otis Flannik / Wallace / Commander Onclay

The West Wing
1999
as Guest

Murder, She Wrote
1984
as Guard / Sgt. O'Connor / Officer

MacGyver
1985
as Cop

Knots Landing
1979

Full House
1987
as Anchorman

Paradise
2025
as Billionaire #1

Everybody Hates Chris
2005
as Mr. Richards

7th Heaven
1996
as Ken

Profiler
1996
as Trooper Jasper

Crazy like a Fox
1984
as Nolan

Femme Fatales
2011
as Detective Mitchum

Reasonable Doubts
1991
as Hanratty

It's Florida, Man.
2024
as Joe Jones

Dead Silent
2016
as Will Hilton
Tribes
1990
as Carl
Movies (15)

Yes, God, Yes
2020
as Priest

Our Friend
2019
as Richard

Locusts
2005
as Director Rusk

Hot Dog... The Movie
1984
as Event Starter

Turbulent Skies
2010
as Gardner

An Accidental Christmas
2007
as Mr Carroll

Solar Flare
2008
as Dispatcher Howard

Hollywood Hot Tubs
1984
as Mr. Slate

U.S. Marshals: Waco & Rhinehart
1987
as FBI Agent #1

Kraa! The Sea Monster
1998
as Nuclear Power Plant Supervisor (Uncredited)

Zarkorr! The Invader
1996
as George Ray

Faith
1990
as Policeman

Adult Swim Yule Log
2022
as Sheriff

Doobious Sources
2017
as Blake Morgan

Charles Sloan
2023
as Charles Sloan
About Mark Costello
Mark began working professionally in Los Angeles back in 1983, when he booked his first job as the "Starter" in, Hot Dog...the Movie". He continued working numerous Co-Star and Guest spots on episodic TV such as, "Murder She Wrote, "Dynasty," Knots Landing," "Who's the Boss," "LA Law," "Full House", "Seventh Heaven," "ER," "N.Y.P.D. Blue," "The West Wing," and "Criminal Minds." Mark also had recurring roles on such television shows as, "Bay City Blues," "JAG", and "First Monday." In 1990, Mark had a three year contract on the FOX youth oriente… With 32 credits spanning from 1979 to 2025, Mark Costello has appeared in 15 films and 17 TV shows.
Fans searching for Mark Costello movies, Mark Costello filmography, or the latest projects starring Mark Costello can stream many of these titles on CineFlixo, free and in HD, with no subscription required.
Most Popular Mark Costello Movies
- Yes, God, Yes (2020) — as Priest
- Our Friend (2019) — as Richard
- Locusts (2005) — as Director Rusk
- Hot Dog... The Movie (1984) — as Event Starter
- Turbulent Skies (2010) — as Gardner
Where to Watch Mark Costello Films
Most Mark Costello movies and series are available to stream on CineFlixo 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 Mark Costello, check our movies catalogue and browse page.