cast
- Sean Connery
- Dr. Paul Bradley
- Natalie Wood
- Tatiana Nikolaevna Donskaya
- Karl Malden
- Harry Sherwood, Director of NASA
- Brian Keith
- Dr. Alexei Dubov, Russian Astrophysicist
- Martin Landau
- Gen. Barry Adlon, Hercules Project Director
- Trevor Howard
- Sir. Michael Hughes
- Richard Dysart
- Secretary of Defense
- Henry Fonda
- President of the United States
- Joseph Campanella
- Gen. Easton, Air Force Chief of Staff
- James G. Richardson
- Alan Marshall
- Domingo Ambriz
- Boy with Radio
- Katherine de Hetre
- Jan Watkins, Trajectory Analysis Officer
- Clete Roberts
- Network Newscaster
- Eileen Saki
- Siberian Woman
- John Findlater
- Astronaut Tom Easton
- Roger Robinson
- Bill Hunter
- Stu Nahan
- Football Announcer
- James Bacon
- News Reporter
- Read Morgan
- Communications Center Technician
- Gregory Gaye
- Russian Premier
- Sybil Danning
- Girl Skier
- Selma Archerd
- Woman in Subway
- Burke Byrnes
- Coast Guard Officer
- Bibi Besch
- Helen Bradley
- Henry Olek
- Army Translator
- Jesse Wayne
- Communications Center Technician
- Joe Medalis
- Bartender
- Allen Williams
- Astronaut Michael McKendrick, Russian Premier
- Fred Carney
- United States Representative
- Charles Bartlett
- Guard
- Joan Foley
- Communications Center Technician
- Bo Brundin
- Manheim
- Bill Couch
- Communications Center Technician
- Raymond O'Keefe
- Guard
- Conrad Palmisano
- Communications Center Technician
- Carole Hemingway
- Sherwood's Secretary
- Michael Zaslow
- Sam Mason
- Ronald Neame
- British Representative
- Peter Bourne
- United Nations President
- Paul Tulley
- Astronaut Bill Frager
- Clyde Kusatsu
- Yamashiro
- Arthur Adams
- Zambian Representative
- Peter Donat
- Opening Sequence Narrator
- Osman Ragheb
- Swiss TV Newscaster
- Philip Sterling
- Russian Representative
- Stanley Mann
- Canadian Representative
- John McKinney
- Peter Watson
- Paul Laurence
- Communications Center Technician
crew
- Ronald Neame
- Director
- Arnold H. Orgolini
- Producer
- Theodore R. Parvin
- Producer
- Edmund H. North
- Screenwriter
- Stanley Mann
- Screenwriter
- Paul Lohmann
- Cinematographer
- Laurence Rosenthal
- Composer (Music Score)
- Carl Kress
- Editor
- Janice Hampton
- Editor
- Edward C. Carfagno
- Production Designer
- David A. Constable
- Art Director
- Gabriel Katzka
- Executive Producer
- Sandy Howard
- Executive Producer
- Barbara Krieger
- Set Designer
- Albert Wolsky
- Costume Designer
- Jack Solomon
- Sound/Sound Designer
- Glen Robinson
- Special Effects
- Daniel McCauley
- First Assistant Director
- Edmond Koons
- Camera Operator
- Barbara Eaton
- Stunts
- Bruce Paul Barbour
- Stunts
- George Robotham
- Stunts
- Jack Lilley
- Stunts
- Larry Duran
- Stunts
- Len Glascow
- Stunts
- Marilyn Jones
- Stunts
- Nick Palmisano
- Stunts
- Sonny Shields
- Stunts
- Ted Duncan
- Stunts
- Lynn Stalmaster
- Casting
- Del Armstrong
- Makeup
- Ed Butterworth
- Makeup
- Hallie Smith-Simmons
- Makeup
