Peter Finch
Role: Umberto Nobile
Sean Connery
Role: Roald Amundsen
Claudia Cardinale
Role: Valeria
Hardy Krüger
Role: Einar Lundborg
Eduard Martsevich
Role: Finn Malmgren
Grigori Gaj
Role: Rudolf Samoylovich
Nikita Mikhalkov
Role: Boris Chukhnovskiy
Luigi Vannucchi
Role: Captain Zappi
Mario Adorf
Role: Giuseppe Biagi
Donatas Banionis
Role: Adalberto Mariano
Massimo Girotti
Role: Giuseppe Romagna Manoja
Yuriy Solomin
Role: Felice Trojani
Otar Koberidze
Role: Natale Cecioni
Boris Khmelnitsky
Role: Alfredo Viglieri
Yuri Vizbor
Role: Frantisek Behounek
Nikolay Ivanov
Role: Kolka Shmidt
Vladimir Smirnov
Role: Shelagin
Tengiz Archvadze
Role: Renato Alessandrini (uncredited)
Rein Aren
Role: Karl Eggi (uncredited)
Heinz Braun
Role: Reporter (uncredited)
Anatoliy Bystrov
Role: Rinborg's Neighbor in the Hospital Room (uncredited)
Robert Daglish
Role: The Reporter (uncredited)
Feliksas Einas
Role: Amundsen's Servant (uncredited)
Roland Engmann
Role: Duty Officer (uncredited)
Boris Goldayev
Role: Kolka Shmidt's Fellow Villager (uncredited)
Leonid Kanevsky
Role: Italian Radio Operator (uncredited)
Viktor Kharitonov
Role: Part-bit (uncredited)
Stanislav Khitrov
Role: Radio Operator of Icebreaker 'Krasin' (uncredited)
Irakli Khizanishvili
Role: Pomella (uncredited)
Eve Kivi
Role: The Blonde Lady (uncredited)
Boris Klyuev
Role: The Reporter (uncredited)
Stepan Krylov
Role: The Boatswain (uncredited)
Vitaliy Matveyev
Role: Seeing Off (uncredited)
Sergey Madyanov
Role: Part-bit (uncredited)
Galina Mikeladze
Role: Telegraph Operator (uncredited)
Dmitriy Mirgorodskiy
Role: Caratti (uncredited)
Oleg Mokshantsev
Role: Pavel Ponomaryov (uncredited)
Yuriy Nazarov
Role: Anatoliy Alekseev (uncredited)
Bruno O'Ya
Role: Norwegian Radio Operator (uncredited)
Yevgeniy Orlov
Role: Mishka (uncredited)
Gleb Plaksin
Role: The Reporter (uncredited)
Ernst Romanov
Role: The Polar Explorer (uncredited)
Paul Scofield
Role: Main Judge (uncredited)
Aleksey Sezeman
Role: The Reporter (uncredited)
Valeriy Sirovskiy
Role: Lago (uncredited)
Nikolay Smorchkov
Role: The Seaman (uncredited)
Rogvold Sukhoverko
Role: Ringborg (uncredited)
Tamara Timofeeva
Role: The Woman in the Crowd of People Seeing Off (uncredited)
Andrei Vertogradov
Role: Radio Operator of 'Citta di Milano' (uncredited)
Luidmila Tsvetkova
Role: Part-bit (uncredited)
Aleksandr Yanvaryov
Role: Straube (uncredited)
Aleksandra Yozhkina
Role: The Woman in the Crowd of People Seeing Off (uncredited)
