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

Nadia Clifford

Dr. Svetlana Zinchenko

Sam Strike

Misha

Sammy Hayman

Titenok

Matas Dirgincius

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)

Ron Cook

Old Maternity Doctor

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

Donald Sumpter

Zharkov

Diarmaid Murtagh

Zukauskas

Natasha Radski

Russian News Reader

Yitzchak Averbuch

General

Joe Tucker

Plant Employee

Caoilfhionn Dunne

Yenina

Philip Barantini

Bezpalov

Oscar Dyekjær Giese

Baranov

Baltasar Breki Samper

Ananenko

Pandora Colin

Dr. Vetrova

Gerard Kearns

Pravik

Povilas Jatkevičius

Kibenok

Rachel Atkins

Niyazova

Darius Petkevičius

Local Husband

James Cosmo

Miner

Arnas Danusas

Soldier (Miner's Bus)

Michael Colgan

Mikhail Shadov

James Kermack

Miner

Karolis Vilkas

Miner

June Watson

Old Woman Babushka

Amanda Drew

Kremlin Aide Female

Josef Altin

Soldier

Sergejus Ivanovas

Survey Soldier

Alexej Manvelov

Garo

Josef Davies

Janek

Velta Žygurė

Elderly Librarian

Paulius Čižinauskas

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

Michael Socha

Mikhail

Jamie Sives

Sitnikov

Douggie McMeekin

Yuvchenko

Simonas Dovidauskas

KGB Driver

Hilton McRae

Judge Milan Kadnikov

Kieran O'Brien

Khodemchuck

Cait Davis

Local Wife at Bar

Michael Shaeffer

Blond Man

Šarūnas Datenis

Soldier (Reactor Site)

Adam Lundgren

Brazhnik

Billy Postlethwaite

Boris Stolyarchuk

Jay Simpson

Perevozchenko

Karolis Kasperavičius

Viktor Degtaryenko

Paulius Markevičius

Aleksandr Kudryavstev