Sean Connery (Roald Amundsen)
Claudia Cardinale (Nurse)
Hardy Kruger (Aviator)
Peter Finch (Gen. Umberto Nobile)
Massimo Girotti (Rescue Coordinator)
Donatas Banionis (Mariano)
Yuri Solomin (Troiani)
Otar Koberidze (Cecioni)
Boris Khmelnitsky
Yuri Vizbor
Andrei Vertogradov
Eduard Martsevich
Grigoriy Gay
Nikita Mikhalkov (Icebreaker Pilot)
Luigi Vannucchi (Capt. Zappi)
Mario Adorf (Biagi, Radio Operator)