O Avião Foguete X-15

David McLean

as Matt Powell

Charles Bronson

as Lt. Col. Lee Brandon

Mary Tyler Moore

as Pamela Stewart

Stanley Livingston

as Mike Brandon

Ralph Taeger

as Maj. Ernest Wilde

Brad Dexter

as Maj. Anthony Rinaldi

Kenneth Tobey

as Col. Craig Brewster

James Gregory

as Tom Deparma

Patricia Owens

as Margaret Brandon

James Stewart

as Himself / Narrator (voice)

Lisabeth Hush

as Diane Wilde

Lauren Gilbert

as Col. Jessup

Frank Watkins

as Security Policeman

Dick Wilson

as Flight Engineer