Dr. Sidney Schaefer

James Coburn

Don Masters

Godfrey Cambridge

V.I. Kydor Kropotkin

Severn Darden

Wynn Quantrill

William Daniels

Nan Butler

Joan Delaney

Arlington Hewes

Pat Harrington Jr.

Old Wrangler

Barry Maguire

Old Wrangler

Barry McGuire

Dr. Lee-Evans

Will Geer

Snow White

Jill Banner

Ethan Allen Cocket

Eduard Franz

Henry Lux

Walter Burke

Jeff Quantrill

Joan Darling

Bing Quantrill

Sheldon Collins

Sullivan

Arte Johnson

1st Puddlian

Martin Horsey

2nd Puddlian

William Beckley

Tourist

Kathleen Hughes

Phoneman (uncredited)

Walt Davis

FBR Agent (uncredited)

John Gunn

White House Tour Guide (uncredited)

Pitt Herbert

Chinese Agent (uncredited)

Soon-Tek Oh

Cocktail Waitress (uncredited)

Dyanne Thorne

Dirty Old Man (uncredited)

Hank Worden

Man in Suit Killed in the Beginning (uncredited)

Stephen Young

British Ambassador (uncredited)

Patrick O'Moore