Season Regulars 18

1. 

   Jared Harris

   Valery Legasov

2. 

   Stellan Skarsgård

   Boris Shcherbina

3. 

   Emily Watson

   Ulana Khomyuk

4. 

   Paul Ritter

   Anatoly Dyatlov

5. 

   Jessie Buckley

   Lyudmilla Ignatenko

6. 

   Adam Nagaitis

   Vasily Ignatenko

7. 

   Sam Troughton

   Alexandr Akimov

8. 

   Robert Emms

   Leonid Toptunov

9. 

   Con O'Neill

   Viktor Bryukhanov

10. 

    Adrian Rawlins

    Nikolai Fomin

11. 

    Alan Williams

    KGB Chairman Charkov

12. 

    David Dencik

    Mikhail Gorbachev

13. 

    Mark Lewis Jones

    General Pikalov

14. 

    Ralph Ineson

    General Tarakanov

15. 

    Barry Keoghan

    Pavel

16. 

    Alex Ferns

    Glukhov

17. 

    Fares Fares

    Bacho

18. 

    Michael McElhatton

    Prosecutor Andrei Stepashin

Guest Stars 25

1. 

   Laura Elphinstone

   Oksana

2. Nadia Clifford

   Dr. Svetlana Zinchenko

3. 

   Sam Strike

   Misha

4. 

   Sammy Hayman

   Titenok

5. Matas Dirgincius

   Vladimir Tishchura

6. 

   Caolan Byrne

   Day Shift Worker

7. Stephen Bisland

   Night Shift Worker

8. 

   Alex Blake

   Petrovich

9. 

   Ron Cook

   Old Maternity Doctor

10. 

    Donald Sumpter

    Zharkov

11. 

    Gerard Kearns

    Pravik

12. 

    Povilas Jatkevičius

    Kibenok

13. 

    Michael Socha

    Mikhail

14. 

    Jamie Sives

    Sitnikov

15. 

    Douggie McMeekin

    Yuvchenko

16. 

    Michael Shaeffer

    Blond Man

17. 

    Karl Davies

    Viktor Proskuryakov

18. 

    Adam Lundgren

    Brazhnik

19. 

    Billy Postlethwaite

    Boris Stolyarchuk

20. 

    Jay Simpson

    Perevozchenko

21. Ross Armstrong

    Nikolai Gorbachenko

22. 

    Paulius Markevičius

    Aleksandr Kudryavstev

23. 

    Joshua Leese

    Kirschenbaum

24. 

    Karolis Kasperavičius

    Viktor Degtaryenko

25. Jan Ricica

    Oksana's Kid

Crew 16