Full Cast — Space: 1999 (1975–1977)

Martin Landau

John Koenig

Barbara Bain

Helena Russell

Nick Tate

Alan Carter

Zienia Merton

Sandra Benes

Anton Phillips

Dr. Mathias

Catherine Schell

Maya / Servant of the Guardian

Barry Morse

Victor Bergman

Tony Anholt

Tony Verdeschi

Prentis Hancock

Paul Morrow

Clifton Jones

David Kano

Sarah Bullen

Kate

Alan Harris

Entran Prisoner (uncredited) / Main Mission Operative (uncredited) / Patient (uncredited) / Alphan (uncredited)

John Hug

Bill Fraser / Fraser

Yasuko Nagazumi

Yasko

Jeffery Kissoon

Ben Vincent

Harry Fielder

Command Center Technician (uncredited) / Medic (uncredited) / Gerry (uncredited) / Survey Team Member (uncredited) / Security Guard (uncredited) / Security Guard George (uncredited)

Albin Pahernik

Space / Kreno Animal / Lizard Animal / Maya / Creature / Creature

Shane Rimmer

Eagle Pilot (voice) (uncredited) / Bannion (voice) / James Kelly / Eagle Pilot (voice) / Maintenance Section Voice (voice) (uncredited)

Emily Bolton

June

Robert Phillips

Main Mission Operative (uncredited)

Stuart Damon

Guido Verdeschi / Parks

Annie Lambert

Operative / Main Mission Operative Julie Tracy (uncredited)

Sam Dastor

Ed Spencer

Alibe Parsons

Alibe

Alf Joint

Security Guard (uncredited) / Alphan on Balcony (uncredited) / Steiner (uncredited)

Isla Blair

Female Alien / Carla

Laurie Davis

Main Mission Operative (uncredited) / Stewardess

Brian Blessed

Cabot Rowland / Mentor

James Fagan

Ken Johnson

Peter Porteous

Petrov

Roy Marsden

Crael / Alien Invisible

Laurence Harrington

Jackson / Stewart

Earl Robinson

Sandstrom

Nicholas Young

Peter Rockwell

Drewe Henley

Joe Ehrlich

Billy J. Mitchell

Professor Hunter

Cher Cameron

Louisa

Al Lampert

Ken Burdett

Robert Sheedy

Henry

Patrick Westwood

Dr. Shaw

Jeremy Young

Jack Bartlett

Toby Robins

Diana Morris

John Judd

Security Guard

Roy Dotrice

Gerald Simmons