William Mapother

April 17, 1965 (age 61) 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. Description above from the Wikipedia article William Mapother, licensed under CC-BY-SA, full list of contributors on Wikipedia.

His titles like Mission: Impossible II, The Grudge, and Another Earth - his biggest roles first.
Last updated: August 21, 2026

Watched: 0/31

Weighted avg: 5.95 /10

1

1

Mission: Impossible II

2000May 2000 by John Woo

Minor role as Wallis

Minor role as Wallis

5.66 Okay
2

2

The Grudge

2004October 2004 by Takashi Shimizu

Supporting as Matthew Williams

Supporting as Matthew Williams

5.45 Okay
3

3

Another Earth

2011July 2011 by Mike Cahill

Starring as John Burroughs

Starring as John Burroughs

6.27 Good--
4

4

I Origins

2014July 2014 by Mike Cahill

Supporting as Darryl Mackenzie

Supporting as Darryl Mackenzie

7.20 Good++
5

5

Swordfish

2001June 2001 by Dominic Sena

Minor role as Gabriel's Crew

Minor role as Gabriel's Crew

5.79 Okay+
6

6

Lords of Dogtown

2005June 2005 by Catherine Hardwicke

Supporting as Donnie

Supporting as Donnie

6.65 Good
7

7

The Atticus Institute

2015January 2015 by Chris Sparling

Lead role as Dr. Henry West

Lead role as Dr. Henry West

5.39 Okay-
8

8

In the Bedroom

2001November 2001 by Todd Field

Supporting as Richard Strout

Supporting as Richard Strout

6.46 Good-
9

9

The Burrowers

2008September 2008 by J.T. Petty

Starring as Will Parcher

Starring as Will Parcher

5.50 Okay
10

10

Suspect Zero

2004August 2004 by E. Elias Merhige

Minor role as Bill Grieves

Minor role as Bill Grieves

5.12 Okay--
11

11

Tell Me How I Die

2016September 2016 by D.J. Viola

Supporting as Dr. Jerrems

Supporting as Dr. Jerrems

5.07 Okay--
12

12

Static

2012October 2012 by Todd Levin

Starring as Greg Wagner

Starring as Greg Wagner

5.07 Okay--
13

13

The Zodiac

2005July 2005 by Alexander Bulkley

Supporting as Dale Coverling

Supporting as Dale Coverling

5.25 Okay-
14

14

Ask the Dust

2006February 2006 by Robert Towne

Supporting as Bill

Supporting as Bill

5.16 Okay--
15

15

FDR: American Badass!

2012September 2012 by Garrett Brawith

Minor role as Dr. Ellington

Minor role as Dr. Ellington

5.05 Okay--
16

16

A Warrior's Heart

2011December 2011 by Mike Sears

Supporting as Coach David Milligan

Supporting as Coach David Milligan

5.35 Okay-
17

17

Without Limits

1998September 1998 by Robert Towne

Minor role as Bob Peters

Minor role as Bob Peters

6.11 Okay++
18

18

Hurt

2009November 2009 by Barbara Stepansky

Starring as Darryl Coltrane

Starring as Darryl Coltrane

5.21 Okay--
19

19

Edwin Boyd: Citizen Gangster

2011September 2011 by Nathan Morlando

Minor role as Detective Rhys

Minor role as Detective Rhys

5.47 Okay
20

20

Escape from Polygamy

2013August 2013 by Rachel Lee Goldenberg

Supporting as Ervil

Supporting as Ervil

6.12 Good--
21

21

Moving McAllister

2007September 2007 by Andrew Black

Minor role as Bob

Minor role as Bob

5.20 Okay--
22

22

Underdogs

2013August 2013 by Doug Dearth

Supporting as Bill Burkett

Supporting as Bill Burkett

5.71 Okay+
23

23

Drew Peterson: Untouchable

2014January 2014 by Mikael Salomon

Minor role as Glenn Levecke

Minor role as Glenn Levecke

5.48 Okay
24

24

On Sacred Ground

2023January 2023 by Josh Tickell

Lead role as Daniel McKinney

Lead role as Daniel McKinney

Needs more reviews
25

25

Outlaw Posse

2024March 2024 by Mario Van Peebles

Starring as Angel

Starring as Angel

5.62 Okay
26

26

Moola

2007April 2007 by Don Most

Lead role as Steve

Lead role as Steve

Needs more reviews
27

27

Black Girl Missing

2023March 2023 by Delmar Washington

Minor role as Russell

Minor role as Russell

6.24 Good--
28

28

The Kiss

2003September 2003 by Gorman Bechard

Supporting as Peter

Supporting as Peter

5.76 Okay+
29

29

The Lather Effect

2006June 2006 by Sarah Kelly

Supporting as Jack

Supporting as Jack

5.75 Okay+
30

30

Son of Monarchs

2021October 2021 by Alexis Gambis

Minor role as Bob

Minor role as Bob

5.83 Okay+
31

31

The Unknown Cyclist

1998October 1998 by Bernard Salzmann

Minor role as By Stander

Minor role as By Stander

Needs more reviews