William Mapother

William Mapother

Acting

Born April 17, 1965 · Louisville, Kentucky, USA

William Reibert Mapother Jr. (/ˈmeɪpɒθər/; born April 17, 1965) is an American actor, known for his role as Ethan Rom on the television series Lost and starring in the film In the Bedroom. He is also…

Known for

Law & Order: Special Victims Unit

Law & Order: Special Victims Unit

1999

The Mentalist

The Mentalist

2008

NCIS

NCIS

2003

Criminal Minds

Criminal Minds

2005

CSI: Crime Scene Investigation

CSI: Crime Scene Investigation

2000

The Blacklist

The Blacklist

2013

Hawaii Five-0

Hawaii Five-0

2010

Lost

Lost

2004

Acting(80)

2026The LeaderReverend Applewhite

2025Suits LAGreg Fisher

2024Outlaw PosseAngel

2023Black Girl MissingRussell

2023On Sacred GroundDaniel McKinney

2021Son of MonarchsBob

2021A Little DreamWayne

20209-1-1: Lone StarBruce Ackerman

2020FBI: Most WantedTravis Russell

2016MacGyverThe Client / Daniel Holt

2016Tell Me How I DieDr. Jerrems

2016Rush HourPrincipal

2015SupergirlDr. Rudy Jones / Parasite

2015Minority ReportCharlie Peele

2015PowersTodd Secor

2015BlackhatRich Donahue

2015The Atticus InstituteDr. Henry West

2014ConstantineJacob Shaw

2014American War GeneralsSelf - Narrator

2014I OriginsDarryl Mackenzie

2014Drew Peterson: UntouchableGlenn Levecke

2013The BlacklistBill

2013Escape from PolygamyErvil

2013UnderdogsBill Burkett

2013JobsCalligraphy Professor

2013It's Dark HereDavid Tennies

2012StaticGreg Wagner

2012FDR: American Badass!Dr. Ellington

2012Darnell Dawkins: Mouth Guitar LegendPastor Jenkins

2011A Warrior's HeartCoach David Milligan

2011GrimmDwight Eleazer

2011American Horror StoryDriver

2011Edwin Boyd: Citizen GangsterDetective Rhys

2011Another EarthJohn Burroughs

2011Portraits in Dramatic Time

2010Hawaii Five-0Eric Porter

2010JustifiedDelroy Baker

2010Human TargetSam Fisher

2009HurtDarryl Coltrane

2009Celebrity Ghost StoriesSelf

2009CastleCarl Matthews

2008The MentalistRichard Haibach

2008The BurrowersWill Parcher

2007Viva Laughlin

2007Moving McAllisterBob

2007Mad MenRandall Walsh

2007Burn NoticeGarret Hartley

2006World Trade CenterMarine Sergeant Thomas

2006The Lather EffectJack

2006Ask the DustBill

2005Criminal MindsIan Corbin

2005The ZodiacDale Coverling

2005The InsideRonald Ewing

2005Lords of DogtownDonnie

2004The GrudgeMatthew Williams

2004LostEthan Rom

2004Suspect ZeroBill Grieves

2003NCISKyle Grayson

2003The KissPeter

2002CSI: MiamiPete Keller

2002Minority ReportHotel Clerk

2002The Pennsylvania Miners' StoryJohn 'Flathead' Phillippi

2001Vanilla SkyClubgoer (uncredited)

2001In the BedroomRichard Strout

2001Law & Order: Criminal IntentJohn Silvestri

2001Crossing JordanHenry Bishop

2001SwordfishGabriel's Crew

2000CSI: Crime Scene InvestigationDouglas Sampson

2000Mission: Impossible IIWallis

1999MagnoliaWDKK Show Director's Assistant

1999Law & Order: Special Victims UnitLuke Edmunds

1998The Unknown CyclistBy Stander

1998Without LimitsBob Peters

1994Touched by an AngelEddie

1989Born on the Fourth of JulyPlatoon - Vietnam

The Possession at Gladstone ManorHenry Gladstone

William Mapother — Watchpile | Watchpile