Moon Pilot

Tom Tryon

Capt. Richmond Talbot

Brian Keith

Maj. Gen. John M. Vanneman

Edmond O'Brien

McClosky aka 'Mac'

Dany Saval

Lyrae

Bob Sweeney

Sen. Henry McGuire

Tommy Kirk

Walter Talbot

Kent Smith

Secretary of the Air Force

Sarah Selby

Mrs. Talbot

Nancy Kulp

Nutritionist Officer

Bert Remsen

Brennan

Harp McGuire

Federal Security Driver

Simon Scott

Medical Officer

Robert Brubaker

Space Flight Technician (uncredited)

Walt Davis

Air Force Officer (uncredited)

Douglas Evans

Colonel (uncredited)

Sally Field

Beatnik Girl in Lineup (uncredited)

Michael Garrett

Control Board Technician (uncredited)

Bob Hastings

Motorist (uncredited)

Jonathan Hole

Hotel Clerk (uncredited)

John Holland

Joe McCord (uncredited)