On screen
Cast
90 credited performers
Jared Harris
Valery Legasov
Stellan Skarsgård
Boris Shcherbina
Emily Watson
Ulana Khomyuk
Paul Ritter
Anatoly Dyatlov
Jessie Buckley
Lyudmilla Ignatenko
Adam Nagaitis
Vasily Ignatenko
Sam Troughton
Alexandr Akimov
Robert Emms
Leonid Toptunov
Con O'Neill
Viktor Bryukhanov
Adrian Rawlins
Nikolai Fomin
Alan Williams
KGB Chairman Charkov
David Dencik
Mikhail Gorbachev
Mark Lewis Jones
General Pikalov
Ralph Ineson
General Tarakanov
Barry Keoghan
Pavel
Alex Ferns
Glukhov
Fares Fares
Bacho
Michael McElhatton
Prosecutor Andrei Stepashin
Laura Elphinstone
Oksana
Michael Socha
Mikhail
Karl Davies
Viktor Proskuryakov
Jan Ričica
Oksana's Kid
Nadia Clifford
Dr. Svetlana Zinchenko
Ron Cook
Old Maternity Doctor
Donald Sumpter
Zharkov
Philip Barantini
Bezpalov
Oscar Dyekjær Giese
Baranov
Baltasar Breki Samper
Ananenko
Gerard Kearns
Pravik
Povilas Jatkevičius
Kibenok
Darius Petkevičius
Local Husband
Amanda Drew
Kremlin Aide Female
Jamie Sives
Sitnikov
Douggie McMeekin
Yuvchenko
Cait Davis
Local Wife at Bar
Michael Shaeffer
Blond Man
Adam Lundgren
Brazhnik
Billy Postlethwaite
Boris Stolyarchuk
Jay Simpson
Perevozchenko
Ross Armstrong
Nikolai Gorbachenko
Paulius Markevičius
Aleksandr Kudryavstev
Joshua Leese
Kirschenbaum
Karolis Kasperavičius
Viktor Degtaryenko
Sam Strike
Misha
Sammy Hayman
Titenok
Matas Dirginčius
Vladimir Tishchura
Caolan Byrne
Day Shift Worker
Stephen Bisland
Night Shift Worker
Alex Blake
Petrovich
Matthew Needham
Dmitri
Rosie Sheehy
Nurse Pripyat
Tomas Žaibus
Soldier (Hospital)
Peter Guinness
Major Burov
Laurence Spellman
Commission Heli Pilot
Alison Pargeter
BCP HQ Aide Female
Victor McGuire
Garanin
Sakalas Uždavinys
Ilya Ivanovich Chulkov
Aidas Jurgaitis
Soldier (Shelter)
Aiste S. Gram
Bartender in Polyissa Hotel
Daniel Crossley
Stasiuk
Lucy Russell
Marina Gruzinskaya
Diarmaid Murtagh
Zukauskas
Natasha Radski
Russian News Reader
Yitzchak Averbuch
General
Joe Tucker
Plant Employee
Caoilfhionn Dunne
Yenina
Pandora Colin
Dr. Vetrova
Rachel Atkins
Niyazova
James Cosmo
Miner
Arnas Danusas
Soldier (Miner's Bus)
Michael Colgan
Mikhail Shadov
James Kermack
Miner
Karolis Vilkas
Miner
June Watson
Old Woman Babushka
Josef Altin
Soldier
Sergejus Ivanovas
Survey Soldier
Alexej Manvelov
Garo
Josef Davies
Janek
Velta Žygurė
Elderly Librarian
Paulius Cizinauskas
KGB Agent Library
Mark Bagnall
Jughashvili (Robot Operator)
Ian Pirie
Site Officer Masha
Andrew Sheridan
Biorobot
Lukas Malinauskas
Biorobot Soldier
Marius Karolis Gotbergas
Biorobot Soldier
Simonas Dovidauskas
KGB Driver
Hilton McRae
Judge Milan Kadnikov
Kieran O'Brien
Khodemchuck
Šarūnas Datenis
Soldier (Reactor Site)
Deividas Breivė
Soldier (Mobile Office)