Tommy Kirk
Dop - Martian Fellow #1 / Mr. Fast - Seattle Sun Reporter
Yvonne Craig
Dr. Bolen
Byron Lord
Col. Bob Page, U.S.D.S.
Roger Ready
Stimmons
Barnett Shaw
Man at Military Conference
Neil Fletcher
Secretary of Defense
Chet Davis
Network News Man
Ron Scott
George Edgley
Planetarium Director
Dick Simpson
Don Campbell
Bob Hazlett
James, Gas Station Attendant
Ann Palmer
U.S.D.S. Tech
Gordon Bulow
Bill Thurman
Drunk on Pier
Claude Earls
Sally Casey
Bob Lorenz
Sylvia Rundell
David England
Planetarium Manager
Terry Davis
Warren Hammack
Martian Doctor / Fellow #2
Tony Huston
Martian Fellow #3
Larry Tanner
Martian Fellow #4
Patrick Cranshaw
Drunk #2 on Pier
Cal Duggan
Martian Fellow #5
Pat Delaney
Artist Abducted by Martians
Sherry Roberts
Brenda Knowlan, Abductee
Donna Lindberg
Stewardess Abducted by Martians
Bubbles Cash
Stripper Abducted by Martians
Larry Buchanan
Narrator of Planetarium Film (voice)