EnglishSean Connery as Dr Paul Bradley
Natalie Wood as Tatiana Nikolaevna Donskaya
Karl Malden as Harry Sherwood NASA
Brian Keith as Dr Alexei Dubov
Martin Landau as Maj Gen Adlon
Trevor Howard as Sir Michael Hughes
Richard A Dysart as Secretary of Defense
Henry Fonda as The President
Joseph Campanella as Lt Gen Easton
Bo Brundin as Rolf Manheim
Katherine De Hetre as Jan Watson
James G Richardson as Alan Marshall
Roger Robinson as Bill Hunter
Michael Zaslow as Sam Mason
John McKinney as Peter Watson
John Findlater as Astronaut Tom Easton
Paul Tulley as Astronaut Bill Frager
Allen Williams as Astronaut Michael McKendrick
Bibi Besch as Helen Bradley
Gregory Gaye as Russian premier
Clyde Kusatsu as Yamashiro
Burke Byrnes as Coast Guard officer
Joseph G Medalis as Bartender
Charles Bartlett as Guard
Raymond O'Keefe as Guard
Henry Olek as Army Captain
Peter Bourne as UN president
Stanley Mann as Canadian UN representative
Ronald Neame as British UN Representative
Philip Sterling as Russian UN representative
Arthur Adams as Ghana UN representative
Fred Carney as United States UN representative
Sybil Danning as Swiss girl skier
Meschino Paterlini as Swiss boy skier
Johnny Yune as Siberian man
Eileen Saki as Siberian woman
Christine Anne Baur as Communications Center technician
Paul Camen as Communications Center technician
Dorothy Catching as Communications Center technician
Bill Couch as Communications Center technician
William Darr as Communications Center technician
Joan Foley as Communications Center technician
Paul Laurence as Communications Center technician
John Moio as Communications Center technician
Read Morgan as Communications Center technician
Conrad E Palmisano as Communications Center technician
Tony Rocco as Communications Center technician
Jesse Wayne as Communications Center technician
Carole Hemingway as Gladys (Sherwood's secretary)
Clete Roberts as Network newscaster
Stu Nahan as Football Announcer
Osman Ragheb as Osman Ragheb
Yu Wing as Chinese fisherman
Yau Tsui Ling as Chinese fisherman's wife
Ricker Slaven as Canteen worker
James Bacon as News Reporter
Yani Begakis as News Reporter
Selma Archerd as Woman in Subway
Domingo Ambriz as Boy with Radio
Peter Donat as Narrator opening sequence
Simon Cadell as BBC news reporter
George Golden as Newspaperman
Arthur Tovey as Newspaperman