Jared Harris

Valery Legasov

Fares Fares

Bacho

Alex Ferns

Glukhov

Barry Keoghan

Pavel

Ralph Ineson

General Tarakanov

Mark Lewis Jones

General Pikalov

David Dencik

Mikhail Gorbachev

Adrian Rawlins

Nikolai Fomin

Con O'Neill

Viktor Bryukhanov

Robert Emms

Leonid Toptunov

Sam Troughton

Alexandr Akimov

Adam Nagaitis

Vasily Ignatenko

Jessie Buckley

Lyudmilla Ignatenko

Paul Ritter

Anatoly Dyatlov

Emily Watson

Ulana Khomyuk

Stellan Skarsgård

Boris Shcherbina

Michael McElhatton

Prosecutor Andrei Stepashin