William Mapother
Born
April 17, 1965 (60 years old)
Known For
Acting
Place of Birth
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 the film Another Earth.
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Outlaw Posse
Angel
2024
On Sacred Ground
Daniel McKinney
2023
Tell Me How I Die
Dr. Jerrems
2016
Blackhat
Rich Donahue
2015
The Atticus Institute
Dr. Henry West
2015
I Origins
Darryl Mackenzie
2014
Drew Peterson: Untouchable
Glenn Levecke
2014
Escape from Polygamy
Ervil
2013
Underdogs
Bill Burkett
2013
It's Dark Here
David Tennies
2013
Static
Greg Wagner
2012
FDR: American Badass!
Dr. Ellington
2012
Darnell Dawkins: Mouth Guitar Legend
Pastor Jenkins
2012
A Warrior's Heart
Coach David Milligan
2011
Edwin Boyd: Citizen Gangster
Detective Rhys
2011
Another Earth
John Burroughs
2011
Portraits in Dramatic Time
2011
Hurt
Darryl Coltrane
2009
The Burrowers
Will Parcher
2008
Moola
Steve
2007
World Trade Center
Marine Sergeant Thomas
2006
The Lather Effect
Jack
2006
Ask the Dust
Bill
2006
The Zodiac
Dale Coverling
2005
Lords of Dogtown
Donnie
2005
The Grudge
Matthew Williams
2004
Suspect Zero
Bill Grieves
2004
The Kiss
Peter
2003
Minority Report
Hotel Clerk
2002
Vanilla Sky
Clubgoer (uncredited)
2001
In the Bedroom
Richard Strout
2001
Swordfish
Gabriel's Crew
2001
Mission: Impossible II
Wallis
2000
Magnolia
WDKK Show Director's Assistant
1999
The Unknown Cyclist
By Stander
1998
Without Limits
Bob Peters
1998
Born on the Fourth of July
Platoon - Vietnam
1989
The Possession at Gladstone Manor
Henry Gladstone
Suits LA
Greg Fisher · (1 episode)
2025
Black Girl Missing
Russell
2023
Son of Monarchs
Bob
2021
A Little Dream
Wayne · (3 episodes)
2021
9-1-1: Lone Star
Bruce Ackerman · (1 episode)
2020
FBI: Most Wanted
Travis Russell · (1 episode)
2020
MacGyver
The Client / Daniel Holt · (2 episodes)
2016
Rush Hour
Principal · (1 episode)
2016
Supergirl
Dr. Rudy Jones / Parasite · (1 episode)
2015
Minority Report
Charlie Peele · (2 episodes)
2015
Powers
Todd Secor · (3 episodes)
2015
Constantine
Jacob Shaw · (1 episode)
2014
The Blacklist
Bill · (1 episode)
2013
Jobs
Calligraphy Professor
2013
Grimm
Dwight Eleazer · (1 episode)
2011
American Horror Story
Driver · (1 episode)
2011
Hawaii Five-0
Eric Porter · (1 episode)
2010
Justified
Delroy Baker · (2 episodes)
2010
Human Target
Sam Fisher · (1 episode)
2010
Celebrity Ghost Stories
Self · (1 episode)
2009
Castle
Carl Matthews · (1 episode)
2009
The Mentalist
Richard Haibach · (4 episodes)
2008
Viva Laughlin
(1 episode)
2007
K-Ville
(1 episode)
2007
Moving McAllister
Bob
2007
Mad Men
Randall Walsh · (1 episode)
2007
Burn Notice
Garret Hartley · (1 episode)
2007
Criminal Minds
Ian Corbin · (1 episode)
2005
Threshold
(2 episodes)
2005
The Inside
Ronald Ewing · (1 episode)
2005
Lost
Ethan Rom · (11 episodes)
2004
NCIS
Kyle Grayson · (1 episode)
2003
CSI: Miami
Pete Keller · (1 episode)
2002
Law & Order: Criminal Intent
John Silvestri · (1 episode)
2001
Crossing Jordan
Henry Bishop · (1 episode)
2001
CSI: Crime Scene Investigation
Douglas Sampson · (1 episode)
2000
Law & Order: Special Victims Unit
Luke Edmunds · (1 episode)
1999
Touched by an Angel
Eddie · (2 episodes)
1994