Robert Vaughn

as Napoleon Solo

James Hong

as Prince Phanong

Rip Torn

as Alexander

Cal Bolder

as Ingo Lindstrum

Dorothy Provine

as Tracey Alexander

Leo G. Carroll

as Alexander Waverly

Yvonne Craig

as Maude Waverly

Carol Williams

as Receptionist

David Sheiner

as Parviz

Donna Michelle

as Princess Nicole

Leon Lontoc

as Gen. Bon Phouma

Robert Karnes

as Col. Hawks

Clarke Gordon

as Arnold Claxon

David McCallum

as Illya Kuryakin

David Opatoshu

as Mr. Kavon

Arthur Wong

as Gen. Man-Phang

Teru Shimada

as President Sing-Mok