Main •
Ed Kemmer as Commander-in-Chief Edward "Buzz" Corry – Corry is the senior officer of the Space Patrol whose assigned task including clearing the space lanes and maintaining peace in the galaxy. As the series continued, his mission expanded to exploring the outer regions of intergalactic space and time. •
Lyn Osborn as Cadet Happy Osborn – Osborn is a graduate of the Space Patrol's Space Academy who is given an initial training assignment as cadet and aide to Commander Corry. •
Virginia Hewitt as Carol Carlisle – Carlisle is the daughter of the Secretary General of the United Planets who works in both an administrative and scientific capacity at the United Planets' Headquarters. •
Ken Mayer as Maj. Robbie Robertson – Robertson is the Security Chief of the Space Patrol and friend and fellow adventurer with Commander Corry. in a publicity photo for the show •
Nina Bara as Tonga – Tonga had been a villain in earlier episodes known as The Lady of Diamonds. She is converted from the "dark side" and became the Chief Assistant to Major Robertson and a valuable ally of the Space Patrol. • Bela Kovacs as Prince Baccarratti, and other villains and characters appearing in the series – However, it is his portrayal as Bacarratti or the "black falcon" for which he is probably best remembered. He is also Associate Producer for 16 episodes. •
Norman Jolley as Agent X – Agent X is one of the original recurring arch villains in the series. Jolley is also the "chief writer" for the show and served double duty. •
Marvin Miller as Mr. Proteus – Mr. Proteus was a popular recurring villain who could assume many disguises making him extremely difficult to capture. •
Paul Cavanagh as The Secretary General of the United Planets – He is the chief executive for the government of the United Planets. Commander Corry reported directly to him. •
Glen Denning as Commander Kit Corry – the original star, Denning was replaced by Ed Kemmer very early in the series (after about 25 episodes). Kit Corry is Buzz's older brother and original "Commander-in-Chief" of the Space Patrol.
Recurring Space Patrol hired many actors who later became well known in their own right. The episodes included such personalities as
Ray Bolger,
Gene Barry,
Bill Baldwin,
Lee Van Cleef,
I. Stanford Jolley,
Robert Shayne,
William Schallert,
Richard Devon,
Carleton Young and
Ed Nelson. The following cast members are some of those actors who appeared in multiple episodes: •
Ben Welden as Johnson (9 episodes, 1952–54) • Joel Smith as Android (8 episodes, 1952–55) • Tom McKee as Ahyo (7 episodes, 1953–54) •
Lawrence Dobkin as Marco (7 episodes, 1953–55) • Morgan Shaan as Axel (6 episodes, 1953–54) • Fred Howard as Andrews (6 episodes, 1951–53) •
Richard Karlan as Captain Dagger (5 episodes, 1953–54) • Valerie Bales as Yula (4 episodes, 1955) • Bill Baldwin as Barti (4 episodes, 1951–54) • Jack Reitzen as Keller (4 episodes, 1951–53) •
Lee Van Cleef as Herrick (4 episodes, 1952–53) • Charles Horvath as Corporal (4 episodes, 1952–55) •
Bob Carson as Governor Willis (4 episodes, 1952–53) •
Charles Victor as Dr. Jerry Taylor (4 episodes, 1953–55) • William Justine as Benjamin (4 episodes, 1953–54) •
Robert Shayne as Groata (3 episodes, 1954) • Joel Marston as Bill Redrow (3 episodes, 1952–54) • Norbert Schiller as Bit (3 episodes, 1953–55) •
I. Stanford Jolley as Dr. Lambert (3 episodes, 1953–54) • Oliver Blake as Ezekial Martin (3 episodes, 1954) •
Dorothy Ford as Queen Riva (3 episodes, 1954) •
Henry Corden as Brooks (3 episodes, 1951–53) • Jack Brown as Josiah (3 episodes, 1954) • Gail Bonney as Goodwife Martin (3 episodes, 1954) •
Peter Mamakos as Herrick (3 episodes, 1951–52) •
Ward Wood as Farlon (3 episodes, 1951–52) •
John Alderson as Bolen (3 episodes, 1952–53) • Frederic Berest as Bender (3 episodes, 1952–53) • Stephen Chase as Sloan (3 episodes, 1952–53) • Leo V. Matranga as Freddie (3 episodes, 1952) •
William Boyett as Guard (3 episodes, 1953) •
Joe Cranston as Guard (3 episodes, 1953) • Gabriel Curtiz as Dr. Gruber (3 episodes, 1953) • Anne Dore as Letha (3 episodes, 1953) • Frances Farwell as Calva (3 episodes, 1954) • Hannes Lutz as Doctor Kurt (3 episodes, 1954) •
Gloria Pall as Zamba (3 episodes, 1954) •
Kurt Katch as Arachna (3 episodes, 1955) •
Carleton Young as Gen. Narda (2 episodes, 1954) •
Alvy Moore as Ferris Macklin (2 episodes, 1951–52) •
Lisa Howard as Lisa (2 episodes, 1951) •
Keith Larsen as Bradford (2 episodes, 1952) •
Paul Guilfoyle as Brunner (2 episodes, 1952–53) • George Pembroke as Carl Marsden (2 episodes, 1952–53) • Jerry O'Sullivan as Hefler (2 episodes, 1952) • Bert Holland as The General (2 episodes, 1955) •
John Larch as Korwin (2 episodes, 1953–54) •
Pierce Lyden as Chaney (2 episodes, 1951–55) • Jerry Sheldon as Bit (2 episodes, 1951–55) • William E. Green as Pop Stanton (2 episodes, 1951–53) •
Richard Bartlett as Harris (2 episodes, 1951–52) • Maurice Hill as Capt. Hayward (2 episodes, 1951–52) •
William Schallert as Craig (2 episodes, 1951–52) •
Jean Howell as Nurse (2 episodes, 1952–54) • Jan Arvan as Kruse (2 episodes, 1952–53) • Phil Chambers as Forman (2 episodes, 1952–53) •
Thomas Browne Henry as Holliday (2 episodes, 1952–53) • Bruce Payne as Breckrenridge (2 episodes, 1952–53) •
Dan Seymour as Kovel (2 episodes, 1952–53) •
Roland Varno as Doc (2 episodes, 1952–53) • George Douglas as Bit (2 episodes, 1953–55) • Marshall Bradford as Perry (2 episodes, 1953) • Michael Colgan as Fredericks (2 episodes, 1953) •
Gene Roth as Cole (2 episodes, 1953) •
Ed Nelson as Guard (2 episodes, 1954–55) •
Ed Hinton as Tyler (2 episodes, 1954) • Jack Lynn as Guard (2 episodes, 1954) • Lloyd Taylor as Bookstore Clerk (2 episodes, 1954) •
Richard Devon as Molak (4 episodes, 1950) ==Production==