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Mark Costello

Acting

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…

Known for

The West Wing

The West Wing

1999

JAG

JAG

1995

JAG

JAG

1995

JAG

JAG

1995

ER

1994

MacGyver

MacGyver

1985

Murder, She Wrote

Murder, She Wrote

1984

Murder, She Wrote

Murder, She Wrote

1984

Acting(32)

2025ParadiseBillionaire #1

2024It's Florida, Man.Joe Jones

2023Charles SloanCharles Sloan

Mark Costello — Watchpile | Watchpile

2022Adult Swim Yule LogSheriff

2020Yes, God, YesPriest

2019Our FriendRichard

2017Doobious SourcesBlake Morgan

2016Dead SilentWill Hilton

2011Femme FatalesDetective Mitchum

2010Turbulent SkiesGardner

2008Solar FlareDispatcher Howard

2007An Accidental ChristmasMr Carroll

2005Everybody Hates ChrisMr. Richards

2005LocustsDirector Rusk

1999The West WingGuest

1998Kraa! The Sea MonsterNuclear Power Plant Supervisor (Uncredited)

1996ProfilerTrooper Jasper

19967th HeavenKen

1996Zarkorr! The InvaderGeorge Ray

1995JAGOtis Flannik

1994ERKevin Halloran

1991Reasonable DoubtsHanratty

1990FaithPoliceman

1987Full HouseAnchorman

1987U.S. Marshals: Waco & RhinehartFBI Agent #1

1985MacGyverCop

1984Crazy like a FoxNolan

1984Murder, She WroteGuard

1984Hollywood Hot TubsMr. Slate

1984Hot Dog... The MovieEvent Starter

1979Knots Landing