Personal Info
Known For
Acting
Gender
Male
St. Louis, Missouri, United States
Mark Costello
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
Acting

Paradise
2025

Adult Swim Yule Log
2022

Yes, God, Yes
2020

Our Friend
2019

Femme Fatales
2011

Turbulent Skies
2010

Solar Flare
2008

Everybody Hates Chris
2005

Locusts
2005

The West Wing
1999

Profiler
1996

7th Heaven
1996

JAG
1995

JAG
1995

JAG
1995

ER
1994

Full House
1987

MacGyver
1985

Murder, She Wrote
1984

Murder, She Wrote
1984

Murder, She Wrote
1984

Hollywood Hot Tubs
1984

Hot Dog... The Movie
1984

Knots Landing
1979







