- Harry Dean Stanton - Jay Simms
- Gene Nelson - Whit Morrison
- Kent Taylor - John Martin / Gabilan
- John Larch - Garrickson
- Ray Danton - Tonio
- Cliff Edwards - A.J. Mulcaney
- Edward Platt - Roy Evens
- Fay Spain - Julie Poe
- Walter Barnes - Paulson
- Willis Bouchey - Marshal
- Allison Hayes - Ellie Winters
- Olan Soule - Bartender
- Emile Meyer - Gen. Zachary Moran
- Karen Steele - Elsa Dorn
- Arthur Space - Doc Ferguson
- Sue Randall - Elizabeth
- James Hong - Ching Sun
- Harry Shannon - Jobe Crail
- Bethel Leslie - Mildred Conrad
- Robert Middleton - Big Keel Roberts
- Peter Hansen - Teddy Wright
- James Westerfield - Shapley Howell
- Marvin Miller - John Kelso
- Edgar Buchanan - Cactus Charlie
- Marie Windsor - Polly Landers
- Broderick Crawford - Sgt. Foley
- Donald Woods - Roger Purcell
- Tom Gilson - Jocko Dakota
- Harvey B. Dunn - Mayor
- Lon Chaney Jr. - Rance Fletcher
- Yvette Vickers - Jessie Simmons
- Francis McDonald - Winkler
- George Macready - Clyde Richards
- Joanna Moore - Sharon Stabler
- Will Wright - Billy Willow
- Joan Marshall - Laura Hopkins
- Jim Bannon - Sheriff
- Joseph Crehan - Thomas Bolland
- Stefanie Powers - Ann Elkins
- Howard Petrie - Hugh Blaine
- Wayne Morris - Mace Pomeroy
- Robert Strauss - Howard C. Smith
- Kenneth Tobey - Reed Amherst
- Wanda Hendrix - Daphne Kaye
- Elaine Stewart - Ann Eaton
- Bruce Gordon - Jason Medford
- Chuck Hayward - Fugitive in Plaid Shirt
- Gloria Castillo - Rosita Anselm
- Richard Eastham - Orin Dilts
- George Jones - Joe, 2nd Bartender
- Robert Blake - Bill-Bill MacWilliams
- Brad Dexter - Dallas Agate
- Ross Martin - Caulder Larson
- Reed Hadley - Raoul Cummings
- Ralph Taeger - Frank Dexter
- Frank Silvera - Grasia
- Brett Halsey - Kyle Henderson
- Arthur Shields - Dana Ruggles
- Louise Fletcher - Sarah Lou Conant
- Henry Rowland - Naylor, henchman
- Buck Young - Bill Bassett
- Bud Osborne - Allie Love
- Richard Reeves - George Swift
- Dick Wilson - Tobias Tinker
- John Agar - Sam Phelps
- Pierre Watkin - Judge Smith
- House Peters Jr. - Marshal
- Rick Vallin - Jenks
- Larry Pennell - Cal Beamus
- Len Lesser - Frank Holloway
- Jacqueline Scott - Teresa Renault
- Jacqueline Scott - Carol Otis
- Joi Lansing - Sapphira Gardiner
- Raymond Hatton - Adam Fairbanks - Gunsmith
- Douglas Kennedy - Sheriff Jeb Crater
- Adele Mara - Maria Costa
- Jack Kruschen - Ben Tarko
- Jack Kruschen - Patch Finley
- Gary Vinson - Billy Thompson
- R. G. Armstrong - Marshal William MacWilliams
- James Coburn - Poke Otis
- James Coburn - Leo Talley
- Morgan Woodward - Kana
- Pamela Duncan - Rachel Lowery
- Virginia Gregg - Nora Grant
- Jackie Searl - Mr. O'Brien
- Barry Kelley - Frank Williams
- Harry Lauter - Sheriff Conners
- Dabbs Greer - Will
- Jerome Cowan - Jasper Salt
- Jerome Cowan - Ben Wilson
- Gloria Talbott - Ellen Parish
- Gloria Talbott - Mary MacLeod
- Frankie Darro - Edward 'Snapper' Garrison
- H.M. Wynant - Stone Calf
- H.M. Wynant - Benton Foster
- Grace Lee Whitney - Louise Talbot
- Cathy Downs - Amelia Roberts
- Cathy Downs - Julie Giles
- Robert Karnes - Marshal
- Robert Karnes - Landry
- Rance Howard - Fletcher
- George N. Neise - Hillary Calhoun
- June Blair - Louise Clements
- June Blair - Constance Whitney
- Diane Brewster - Lynn Harrison
- Karl Swenson - Jim Pate
- William Conrad - Clark Benson
- William Conrad - Dick MacIntyre
- Rebecca Welles - Isabel Fowler
- Robert Ivers - Yaqui Kid
- Robert Ivers - Charley Boy
- Dan White - Ben Taylor
- Dan White - Sheriff Bart Sloane
- Claude Akins - Jack Fontana
- Richard Arlen - John Minor
- Richard Arlen - Sheriff Dan Rainey
- Denver Pyle - Walsh (uncredited)
- Denver Pyle - Dan Morgan
- John Carradine - Sheriff Vince Morgan
- Tris Coffin - Marshal Roy Dunning
- John Anderson - Major Liam Mars
- Dyan Cannon - Diane Jansen
- Dyan Cannon - Mary Lowery
- Douglass Dumbrille - Gen. Taylor Millard
- Ken Mayer - Largo Morgan
- Ken Mayer - Major John Whitsett
- DeForest Kelley - Brock Martin
- Dean Harens - Steven Haley
- Dean Harens - Sheriff
- Martín Garralaga - Pio Anselm
- Gerald Mohr - Courtney Shepherd
- Gerald Mohr - Crimp Ward
- Lane Bradford - Rod Bradbury
- Rand Brooks - Willard Wynant
- Patrick Whyte - Willard Quentin
- Byron Morrow - Amos Judd
- Byron Morrow - Henry Hansen
- Paul Langton - Marshal
- Johnny Seven - Burt Comers
- Carol Ohmart - Lisa Truex
- Carol Ohmart - Linda Beaudine
- Lynn Cartwright - Ruby Red
- Kaye Elhardt - Eva Rogers
- William Boyett - Marshal
- William Boyett - Grimm - Stocky Bodyguard
- Raymond Bailey - Justice Bradshaw
- Kevin Hagen - Ace Williams
- Joe Turkel - Woody Larkin
- Joe Turkel - Joe Turkel
- Jay Novello - Captain Angus MacLeod
- Don C. Harvey - Johnny Mills
- Leo Gordon - Joe Quince
- Leo Gordon - Red Eric Peterson
- Andy Albin - Stubby
- Andy Albin - Eddie
- William Fawcett - Sheriff
- Don Haggerty - Gordon Hall
- Don Haggerty - Jess Porter
- William Phipps - Ken Wills
- Constance Ford - Gwen Parsons
- Constance Ford - Ivy Dickson
- Jan Shepard - Jody Reese
- Susan Whitney - Lori Rafferty
- Philip Ober - General Silas Guild
- Chuck Roberson - Henchman about to be Sawn in Half
- Jeanette Nolan - Sister Mary Paul
- Willard Waterman - Bank Manager
- Willard Waterman - Town Merchant
- Willard Waterman - Mayor Goodwin
- Quintin Sondergaard - Ward
- Quintin Sondergaard - Jeb Dakota
- Marshall Reed - Alf Hayman
- Marshall Reed - Romer
- Don 'Red' Barry - Luke Short
- Myron Healey - Jack Latigo
- Myron Healey - Col. Marc James
- Kathleen Crowley - Mari Brewster
- Kathleen Crowley - Jo Hart
- Mort Mills - Barney Kaster
- Jack Ging - Billy Webb
- Jack Ging - Clark Bassett
- Richard Bakalyan - Sam Teller
- Mickey Simpson - Eric
- Mickey Simpson - Donovan
- Patrick McVey - Angus McLarnin
- John Wengraf - Colonel Anders Dorn
- Paul Richards - Ned Ruggles
- Paul Richards - Marshal Corbett
- Noel Drayton - Guitarist
- Jack Lambert - Wancho Tully
- Jack Lambert - King Fisher
- Liam Sullivan - Dick Jeffers
- Liam Sullivan - Blackie
- Jean Willes - Lucy Slater
- Jean Willes - Grace Williams
- Paula Raymond - Angie Pierce
- Paula Raymond - Linda Wills
- Paula Raymond - Millie Wilkins
- Rosa Turich - Anita
- Oscar Beregi Jr. - Hermann the Great
- William Schallert - Dr. Harold Dunsmore
- William Schallert - George Winston
- John Archer - Jim
- Ken Christy - Attorney Enders
- Ken Christy - Eli
- Ken Christy - Morgan
- John Hart - Wilson
- John Hart - Jacobs
- Hal Baylor - Eli Fisher
- Dick Ryan - Burt Mason
- Rusty Lane - Marshal
- John Doucette - Luke Simes
- John Doucette - Lemuel Carstairs
- George Kennedy - Sheriff Zeke Armitage
- Lester Dorr - Land Office Clerk
- Emory Parnell - Ira Ponder
- Anna Navarro - Teresa Martinez
- Kasey Rogers - Dixie Mayhew
- Kasey Rogers - Kitty Meadows
- Kasey Rogers - Francie Wallace
- Warren Oates - Sonny Parsons
- Warren Oates - Cat Crail
- Buff Brady - Guard
- Michael Forest - Noah Gannon
- Michael Forest - Les Wilkins
- Ray Teal - H.G. Cogswell
- Ray Teal - Virgil Gardiner
- Carlos Romero - Juan Torrino / Juan Desoto Incarnacione de la Cruz
- Elisha Cook Jr. - Pete Sheeley
- Elisha Cook Jr. - Thorn Loomis
- Frank Ferguson - Old Billy North
- Frank Ferguson - Dick Pierce
- Jeremy Slate - Bob Clements
- Peggy Knudsen - Louisa Carey
- Peggy Knudsen - Lottie Tremaine
- Peggy Knudsen - Katie
- Henry Wills - Stagecoach Driver
- Robert J. Wilke - Bull Kirby
- Robert J. Wilke - Rod Clements
- Paul Lambert - Luke Steiger
- Paul Lambert - Charles Hamilton
- Paul Lambert - Augustus Ulbrecht
- King Donovan - Shorty Keenan
- Leslie Parrish - Lisa Anders
- Leslie Parrish - Lucy Carter
- Lisa Gaye - Lori Dowling aka Lori La Rue
- Lisa Gaye - Susan Carver
- Lisa Gaye - Elena
- Diana Darrin - Joan
- Leonard P. Geer - Woody (uncredited)
- Leonard P. Geer - Bank Robber #2 (uncredited)
- George Sawaya - Harry Sutton
- Conrad Nagel - Harry Varden
- Jack Hogan - Jack - Henchman
- Jack Hogan - Stuart Chancellor
- Jack Hogan - Marshal Johnny Dillon
- John Vivyan - Chip Grimes
- John Vivyan - Sir Edward Marion
- Milton Frome - Kansas Governor
- Milton Frome - Sheriff Clark
- Hank Patterson - Prospector
- Hank Patterson - Warren T. 'Soda' Smith
- Hank Patterson - Soda Smith
- James Best - Joe Best
- James Best - Danny Dakota
- Dehl Berti - Lank
- Dehl Berti - Tobe Pruitt
- Dehl Berti - Gant Barth
- Charles Maxwell - Marshal Ed Caulder
- Charles Maxwell - Gen. Phil Sheridan
- Charles Maxwell - Ron Davis
- Charles Maxwell - Harvey Mason
- Audrey Dalton - Abby Chancellor
- Audrey Dalton - Cally Armitage
- Audrey Dalton - Abigail Feather
- Gene Roth - Barkeep
- Gene Roth - Mayor Oliver Hinton
- Gene Roth - Miner
- Patrick Waltz - Sheriff McCauley
- Miranda Jones - Nancy Wilkerson
- Dennis Moore - Tom
- Dennis Moore - Barker
- Dennis Moore - Tim Clovis
- Dennis Moore - Hacker
- Dennis Moore - Sheriff
- Don Kennedy - Fred Sanders
- Don Kennedy - Sheriff Tim Lockhart
- Terry Frost - Townsman with Black Mustache
- Terry Frost - Tom Kearns
- Ron Hayes - Wyatt Earp
- Ron Hayes - Jeremy French
- William Henry - Sheriff Griff Hanley
- William Henry - Sheriff Brady
- Patricia Donahue - Joyce Howell
- Patricia Donahue - Billie Tuesday
- Gregory Walcott - Sam Long
- Gregory Walcott - Lou
- Ed Nelson - Jedrow
- Ed Nelson - Browder
- James Seay - Harry Cassidy
- James Seay - Parker James
- George Eldredge - Monroe Fowler
- George Eldredge - Doctor
- George Eldredge - Colonel Downey
- George Eldredge - Judge Oliver
- Tyler McVey - Colonel Sloan
- Tyler McVey - Jim Thompson
- Tyler McVey - Vernon Ellwood
- John Dehner - Sheriff
- John Dehner - Marshal Ben Holt
- Wayne Heffley - Jeff
- John Parrish - Frank Jennings
- John Parrish - Ron Olson
- Bek Nelson - Martha Yale
- Rudy Doucette - Townsman (uncredited)
- Ted de Corsia - John Watson
- Herschel Graham - Club Member (uncredited)
- Russell Custer - Townsman (uncredited)
- Jack Gordon - Cornerman (uncredited)
- Lisa Montell - Selena Thorn
- Hal Taggart - Townsman (uncredited)
- Tom McKee - Derelict
- Tom McKee - Swede
- Valerie Allen - Catherine Guild
- Wayne Mallory - Deputy
- Tom London - Prisoner (uncredited)
- Harold J. Stone - Jess Hobart
- Gavin Muir - Oliver Jenkins
- Jean Allison - Lorna Stevens
- Charles Seel - Barkeep
- Billy Nelson - Ringmaster
- Keith Richards - Sheriff Atkins
- Ruta Lee - Nellie Fontana
- George Cisar - Sheriff
- John Gallaudet - Gen. William T. Sherman
- Michael Whalen - Marshal
- Frank J. Scannell - Piano Player
- Dick Cherney - Townsman (uncredited)
- Harvey Stephens - Isaac Parker
- Harvey Stephens - Judge Thatcher
- Joan O'Brien - Eileen McDermott
- Joan O'Brien - Dora Miller
- Frank Wilcox - Tobias Manning
- Ray Ballard - Clerk
- James Goldstone
- William Conrad
- Lew Landers
- Bernard Girard
- Walter Doniger
- Montgomery Pittman
- John McGreevey
- Leo Gordon
- John Tucker Battle
- Don Brinkley
- Gene Levitt
Johnny Seven interpreta a Burt Comers en la serie.
Elisha Cook Jr. interpreta a Thorn Loomis en la serie.
Marie Windsor interpreta a Polly Landers en la serie.
Robert J. Wilke hace el papel de Rod Clements.
Ted de Corsia interpreta a John Watson en la serie.
Joe Turkel interpreta a Joe Turkel en la serie.
R. G. Armstrong interpreta a Marshal William MacWilliams en la serie.
Philip Ober interpreta a General Silas Guild en la serie.
Edward Platt hace el papel de Roy Evens.
Patrick McVey interpreta a Angus McLarnin en la serie.
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