Chuck Yeager
Alan Shepard
John Glenn
Gordon Cooper
Gus Grissom
Glennis Yeager
Pancho Barnes
Betty Grissom
Trudy Cooper
Deke Slayton
Scott Carpenter
Wally Schirra
Lyndon B. Johnson
Jack Ridley / Narrator
Annie Glenn
Scott Crossfield
Louise Shepard
Marge Slayton
Rene Carpenter
Jo Schirra
Minister
Liaison Man
Air Force Major
NASA Recruiter
Chief Scientist
Nurse Murch
Gonzales
Head of Program
Life Reporter
Himself
Slick Goodlin
The Permanent Press Corps
Grand Designer
Woman Reporter
Dwight D. Eisenhower
Eddie Hodges
Aide to Lyndon B. Johnson
Woman TV Reporter
Waitress
Bell Aircraft Executive
Sally Rand
Henry Luce
Review Board President
Assistant Scientist
Game Show M.C.
1st X-1 Pilot
Aborigine
Australian Driver
Young Widow
Cocoa Beach Girl
Texan
Girl at Pancho's
Astronaut Trainee
Fred
New Mexico Nurse in Lobby (uncredited)