Robert Vaughn
Napoleon Solo
David McCallum
Illya Kuryakin
Leo G. Carroll
Alexander Waverly
Ron Nyman
Party Guest (uncredited)
Hal Taggart
Club Member (uncredited)
David Sheiner
Parviz
Arthur Tovey
Townsman (uncredited)
James Hong
Prince Phanong
Diane McBain
Contessa Margo De Fanzini
Jill Ireland
Imogen Smythe
Sharon Farrell
Leslie Stemmler
Michael St. Clair
James
Richard Anderson
Senator Steve Bryant
Ricardo Montalban
David Hurst
Herbert Lom
Randolph
Kim Darby
Sandy True
Curd Jürgens
Carl Von Kesser
Telly Savalas
Count Valeriano De Fanzini
Terry-Thomas
Constable
Ann Elder
Joanna Sweet
Maurice Evans
Sir Norman Swickert
Vera Miles
Madame Raine De Sala
William Corcoran
Ronny (uncredited)
Sid Haig
Alex
Jack Palance
Jeannine Riley
Nina Lillette
Larry D. Mann
Arnold Fairbanks
Joe Mantell
L. C. Carson
Lloyd Bochner
Max Van Schreeten
James Doohan
Phillip Bainbridge
Madge Blake
Miriam Baxter
Chuck Hicks
Hans
Pamela Curran
Inga Bergstrom
Robert Emhardt
Colonel Picks
Woodrow Parfrey
Dr. Ansel Pertwee
J. Pat O'Malley
The Old Prospector
Rex Holman
Oregano
Danielle De Metz
Yvonne
Fred Stromsoe
Karate Killer