Stellan Skarsgård Boris Shcherbina
Jessie Buckley Lyudmilla Ignatenko
Emily Watson Ulana Khomyuk
Barry Keoghan Pavel
Jared Harris Valery Legasov
Ralph Ineson General Tarakanov
Michael McElhatton Prosecutor Andrei Stepashin
Mark Lewis Jones General Pikalov
Fares Fares Bacho
Con O'Neill Viktor Bryukhanov
Adrian Rawlins Nikolai Fomin
David Dencik Mikhail Gorbachev
Adam Nagaitis Vasily Ignatenko
Tobias Henriksson Gaffer
Craig Mazin Screenplay, Executive Producer
Nina Gold Casting
Paul Ritter Anatoly Dyatlov
Robert Emms Leonid Toptunov
Alex Ferns Glukhov
Sam Troughton Alexandr Akimov
Jane Featherstone Executive Producer
Marc-Jason Maier Digital Imaging Technician
Alan Williams KGB Chairman Charkov
J-P Passi Additional Camera, Second Unit Director of Photography
Ieva Rojūtė Set Dressing Buyer
Martin Ware Casting Associate
Gvido Puke Drone Operator
Robert How Line Producer
Max Klaentschi Art Direction
Johan Renck Co-Executive Producer
Daiva Petrulytė Assistant Costume Designer
Phillip J. Braunschober Special Effects Technician
Brett Thomas Second Assistant Director
Barrie Gower Prosthetic Supervisor
Evyen Klean Music Supervisor
Unė Liandzbergytė Assistant Production Coordinator
Robert Sterne Casting
Hildur Guðnadóttir Original Music Composer
Cheyenne Conway Production Manager
Renuaras Krivelis Construction Manager
Astrid Sieben Standby Art Director
Gavin Fitch Art Direction
Carolyn Strauss Executive Producer
Måns Månsson Second Unit Director
Chris Fry Co-Executive Producer
Arturas But Set Dresser
Martina Byrne Prosthetic Makeup Artist
Aleksandr Petrovskij Second Assistant "B" Camera
Andrius Zubkaitis Leadman
Colin Eade Visual Effects Compositor
Rolandas Joneliūkštis First Assistant "B" Camera
Marta Skalska Makeup & Hair
Natasha Nikolic-Dunlop Makeup Supervisor
Andrew Robertson 3D Artist
Karen Walker Second Assistant Accountant
Dalia Vizgirdaite Costume Assistant
Mac McGeary Health and Safety
Paul Spateri Prosthetic Supervisor
Alex Alvarez Animation
James O'Brien Sculptor
Luke Hull Production Design
Ting Yu Sylvester Visual Effects Compositor
David Meanti First Assistant Director
Marius Smailys Set Dresser
Charlotte Laing Digital Intermediate Producer
Chris Roufs Script Supervisor
Jimmy Rogers 3D Artist
Tomas Jankauskas Graphic Designer
Saulius Lukoševičius Additional Camera
Ants Martin Vahur "A" Camera Operator, Steadicam Operator
Donatas Bakanas Unit Manager
Vytas Gudlevicius Key Grip