William Mapother

Actor

Born April 17, 1965 in 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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Acting

SHED
Film, 2026
as Dr. Levin
The Leader
Film, 2026
as Reverend Applewhite
Suits LA
TV series, 2025
as Greg Fisher
Outlaw Posse
Film, 2024
as Angel
Black Girl Missing
Film, 2023
as Russell
On Sacred Ground
Film, 2023
as Daniel McKinney
Son of Monarchs
Film, 2021
as Bob
A Little Dream
TV series, 2021
as Wayne
9-1-1: Lone Star
TV series, 2020
as Bruce Ackerman
FBI: Most Wanted
TV series, 2020
as Travis Russell
MacGyver
TV series, 2016
as The Client / Daniel Holt
Tell Me How I Die
Film, 2016
as Dr. Jerrems
Rush Hour
TV series, 2016
as Principal
Supergirl
TV series, 2015
as Dr. Rudy Jones / Parasite
Minority Report
TV series, 2015
as Charlie Peele
Powers
TV series, 2015
as Todd Secor
Blackhat
Film, 2015
as Rich Donahue
The Atticus Institute
Film, 2015
as Dr. Henry West
Constantine
TV series, 2014
as Jacob Shaw
I Origins
Film, 2014
as Darryl Mackenzie
Drew Peterson: Untouchable
Film, 2014
as Glenn Levecke
The Blacklist
TV series, 2013
as Bill
Escape from Polygamy
Film, 2013
as Ervil
Underdogs
Film, 2013
as Bill Burkett
Jobs
Film, 2013
as Calligraphy Professor
It's Dark Here
Film, 2013
as David Tennies
Static
Film, 2012
as Greg Wagner
FDR: American Badass!
Film, 2012
as Dr. Ellington
Darnell Dawkins: Mouth Guitar Legend
Film, 2012
as Pastor Jenkins
A Warrior's Heart
Film, 2011
as Coach David Milligan