Terry O'Quinn

Lost

as John Locke

Episodes: 118

First Aired: Sep 22, 2004

Chronologically Lost

as John Locke

Episodes: 50

First Aired: May 29, 2010

Millennium

as Peter Watts

Episodes: 36

First Aired: Oct 25, 1996

Alias

as Kendall

Episodes: 18

First Aired: Sep 30, 2001

Patriot

as Tom Tavner

Episodes: 18

First Aired: Nov 03, 2015

Hawaii Five-0

as Joe White

Episodes: 16

First Aired: Sep 20, 2010

666 Park Avenue

as Gavin Doran

Episodes: 13

First Aired: Sep 30, 2012

Gang Related

as Sam Chapel

Episodes: 13

First Aired: May 22, 2014

Full Circle

as Jimmy Parerra

Episodes: 10

First Aired: Oct 09, 2013

Secrets and Lies

as John Warner

Episodes: 10

First Aired: Mar 01, 2015

Castle Rock

as Dale Lacy

Episodes: 10

First Aired: Jul 25, 2018

Perpetual Grace LTD

as Wesley Walker

Episodes: 10

First Aired: Jun 02, 2019

FBI: Most Wanted

as Byron LaCroix

Episodes: 9

First Aired: Jan 07, 2020

Resident Alien

as Peter Bach

Episodes: 8

First Aired: Jan 27, 2021

The West Wing

as Nicholas Alexander

Episodes: 7

First Aired: Sep 22, 1999

The Blacklist: Redemption

as Howard Hargrave

Episodes: 7

First Aired: Feb 23, 2017

Earth 2

as Reilly

Episodes: 6

First Aired: Nov 06, 1994

JAG

as Admiral Thomas Boone

Episodes: 6

First Aired: Sep 23, 1995

Ultra City Smiths

as Captain Krieger (voice)

Episodes: 6

First Aired: Sep 13, 2021

PIECES OF HER

as Martin Queller

Episodes: 6

First Aired: Mar 04, 2022

Emergence

as Richard Kindred

Episodes: 5

First Aired: Sep 24, 2019

JAG

as Thomas Boone

Episodes: 4

First Aired: Sep 23, 1995

The Walking Dead: The Ones Who Live

as Major General Johnathan Beale

Episodes: 3

First Aired: Feb 25, 2024

Ring of Fire

as Oliver Booth

Episodes: 2

First Aired: Dec 21, 2012

Son of the Morning Star

as Gen. Alfred Terry

Episodes: 2

First Aired: Feb 03, 1991

Remington Steele

as Chuck McBride

Episodes: 1

First Aired: Oct 01, 1982

Star Trek: The Next Generation

as Admiral Eric Pressman

Episodes: 1

First Aired: Sep 28, 1987

L.A. Law

as Nick Moats

Episodes: 1

First Aired: Sep 15, 1986

Tales from the Crypt

as Inspector Martin Zeller

Episodes: 1

First Aired: Jun 10, 1989

Tales of the Unexpected

as Cop

Episodes: 1

First Aired: Mar 24, 1979

Moonlighting

as Bryant Wilbourne

Episodes: 1

First Aired: Mar 03, 1985

The X-Files

as Lt. Brian Tillman

Episodes: 1

First Aired: Sep 10, 1993

Roswell

as Carl

Episodes: 1

First Aired: Oct 06, 1999

Hallmark Hall of Fame

as Michael Keddington's Abusive Father

Episodes: 1

First Aired: Dec 24, 1951

Law & Order: Criminal Intent

as Gordon Buchanan

Episodes: 1

First Aired: Sep 30, 2001

Diagnosis: Murder

as Ronald Trent

Episodes: 1

First Aired: Oct 29, 1993

The Client

as Bert Halliwell

Episodes: 1

First Aired: Sep 17, 1995

At Mother's Request

as Joel Campbell

Episodes: 1

First Aired: Jan 04, 1987

The X-Files

as Shadow Man

Episodes: 1

First Aired: Sep 10, 1993

A Year in the Life

as Keith

Episodes: 1

First Aired: Sep 16, 1987

Resident Alien

as Peter Bach (voice)

Episodes: 1

First Aired: Jan 27, 2021

NCIS

as Will Ryan

Episodes: 1

First Aired: Sep 23, 2003

The Twilight Zone

as Curt Lockridge

Episodes: 1

First Aired: Sep 27, 1985

Miami Vice

as Richard Cain

Episodes: 1

First Aired: Sep 16, 1984

Jake and the Fatman

as Vincent Novak

Episodes: 1

First Aired: Sep 26, 1987