Terry O'Quinn

as Self

as Grandpa James

as Major General Johnathan Beale(3 eps)

as John Locke(80 eps)

as Martin Queller(6 eps)

as Dennis

as Captain Krieger (voice)(6 eps)

as Peter Bach(12 eps)

as Peter Bach (voice)(1 ep)

as Byron LaCroix(9 eps)

as Richard Kindred(5 eps)

as Wesley Walker(10 eps)

as Dale Lacy(10 eps)

as Self - Host(8 eps)

as Howard Hargrave(7 eps)

as Dr. Philip Sumrall

as Tom Tavner(18 eps)

as John Warner(10 eps)

as Sam Chapel(13 eps)

as Jimmy Parerra(10 eps)

as Oliver Booth(2 eps)

as Gavin Doran(13 eps)

as Mark Miller

as Joe White(16 eps)

as Professor Mystery (voice)(1 ep)

as John Locke(118 eps)

as Will Ryan(1 ep)

as Goldberg (uncredited)

as Self(1 ep)

as Casey Keddington

as Buster Schuler

as Kendall(18 eps)

as Gordon Buchanan(1 ep)

as Self(1 ep)

as Rollin H. Parker

as Eric Farrell

as Cliff's Father

as J.R. Mitchell

as Carl(1 ep)

as Nicholas Alexander(7 eps)

as Sidney Lassiter

as Michaud

as Hersch Lawyer

as Self(1 ep)

as Richard Cory

as David Walker

as Frank Ridell

as Judge Hilburn

as Peter Watts(40 eps)

as Yancy

as Admiral Thomas Boone(4 eps)

as Thomas Boone(6 eps)

as Bert Halliwell(1 ep)

as Frank Darnell

as Dr. Connors

as Reilly(6 eps)

as Raymond Miller

as Ed Saxe

as Harris Wiley

as Bonner

as Gordon Holc

as Danny Leggett

as Mayor Clum

as Ronald Trent(1 ep)

as Lt. Brian Tillman(1 ep)

as Shadow Man(1 ep)

as Detective Clark

as Adm. Truman Hager

as Dr. Friedman

as Bailey Lafeld(1 ep)

as Henry Cragin

as Barlow

as Cliff Ripley

as Bob Altschuler

as Sergeant Don Bell

as Jack Moseley

as Colonel Pierce Grissom

as Howard Hughes

as Sergeant Nicholas

as Gen. Alfred Terry(2 eps)

as Daniel

as Henry

as Major Beckett

as Curt Mitchell

as Dr. Gene Clifford / Jerry Blake

as Bob Anderson

as Frank Devereaux

as Inspector Martin Zeller(1 ep)

as Jay Floyd

as Aaron Sykes

as Dr. Frank Linden

as Alex McSween

as Connie Priest

as Jerry

as Admiral Eric Pressman(1 ep)

as Vincent Novak(1 ep)

as Keith(1 ep)

as Wes Travis

as Bruce

as Jerry Blake

as Joel Campbell(2 eps)

as Maj. Tom Patterson

as Nick Moats(1 ep)

as Launch Director

as Dr. Wallace

as Sheriff Joe Haller

as Curt Lockridge (segment "Chameleon")(1 ep)

as Jim Barrett

as Dr. Redding

as Bryant Wilbourne(1 ep)

as Claude Harbrough

as Detective Buck McGovern

as Richard Cain(1 ep)

as Buddy Kelsey

as Freeman Smith

as Colonel Thomas Rhodes

as Parent

as Chuck McBride(1 ep)

as Captain Minardi

as James Roosevelt

as Cop(1 ep)

as Michael Keddington's Abusive Father(1 ep)