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 16

1. 

   Laura Elphinstone

   Oksana

2. 

   Michael Socha

   Mikhail

3. 

   Jamie Sives

   Sitnikov

4. 

   Douggie McMeekin

   Yuvchenko

5. Simonas Dovidauskas

   KGB Driver

6. 

   Hilton McRae

   Judge Milan Kadnikov

7. 

   Kieran O'Brien

   Khodemchuck

8. 

   Karl Davies

   Viktor Proskuryakov

9. 

   Adam Lundgren

   Brazhnik

10. 

    Billy Postlethwaite

    Boris Stolyarchuk

11. 

    Jay Simpson

    Perevozchenko

12. Ross Armstrong

    Nikolai Gorbachenko

13. 

    Paulius Markevičius

    Aleksandr Kudryavstev

14. 

    Joshua Leese

    Kirschenbaum

15. 

    Karolis Kasperavičius

    Viktor Degtaryenko

16. Jan Ricica

    Oksana's Kid

Crew 14