Here's a list of actors from Season 5 of Game of Thrones that I have seen on stage (Mostly London theatres)
This list is unfinished and may be modified from time to time
If you have your own list let me know and I will post a link here
Go to my Game of Thrones - Season 5 - Cast list used to make this list
01 - Jon Snow - Kit Harington - posh — Royal Court Theatre (2010)
02 - Petyr 'Littlefinger' Baelish - Aidan Gillen - The Water Engine — Hampstead Theatre (1989)
03 - Stannis Baratheon - Stephen Dillane - Long Day's Journey Into Night — Lyttelton Theatre (1991)
04 - Davos Seaworth - Liam Cunningham - Goodnight Siobhan — Royal Court (1990)
05 - Margaery Tyrell - Natalie Dormer - 0.45 — Michael Frayn Space, Hampstead Theatre (2010)
06 - Ellaria Sand - Indira Varma - Othello — Cottesloe Theatre (1997)
07 - Arya Stark - Maisie Williams - I and You — Hampstead Theatre (2018)
08 - Theon Greyjoy - Alfie Allen - The Spoils — Trafalgar Studios (2016)
09 - Tywin Lannister - Charles Dance - Good — Donmar Warehouse (1999)
10 - Lord Varys - Conleth Hill - The Government Inspector — Tricycle Theatre (1994)
11 - Gilly - Hannah Murray - Martine — Finborough Theatre (2014)
12 - Bronn - Jerome Flynn - Timon of Athens — Young Vic (1991)
13 - Roose Bolton - Michael McElhatton - Shining City — Royal Court Theatre (2004)
14 - Ramsay Bolton - Iwan Rheon - Remembrance Day — Royal Court Upstairs (2011)
15 - Jorah Mormont - Iain Glen - King Lear — Royal Court (1993)
16 - Qyburn - Anton Lesser - Wild Oats — Lyttelton Theatre (1995)
17 - Olenna Tyrell - Diana Rigg - All for Love — Almeida Theatre (1991)
18 - High Sparrow - Jonathan Pryce - A Reckoning — Soho Theatre (2003)
19 - Alliser Thorne - Owen Teale - Berenice — Cottesloe Theatre (1990)
20 - Doran Martell - Alexander Siddig - Holy Warriors — Shakespeare's Globe (2014)
21 - The Waif - Faye Marsay - Road — Royal Court Theatre (2017)
22 - Barristan Selmy - Ian McElhinney - Carthaginians — Hampstead Theatre (1989)
23 - Selyse Baratheon - Tara Fitzgerald - Hamlet — Hackney Empire (1995)
24 - Karsi - Birgitte Hjort Sørensen - Coriolanus — Donmar Warehouse (2013)
25 - Areo Hotah (as DeObia Oparei) - Deobia Oparei - A Midsummer Night's Dream — Barbican Theatre (1989)
26 - Tycho Nestoris - Mark Gatiss - The Recruiting Officer — Donmar Warehouse (2012)
27 - Yezzan zo Qaggaz - Enzo Cilenti - Perfect Days — Hampstead Theatre (1999)
28 - Grand Maester Pycelle - Julian Glover - Julius Caesar — Barbican Theatre (1996)
29 - Mance Rayder - Ciarán Hinds - Simpatico — Royal Court (1995)
30 - Septa Unella - Hannah Waddingham - Spamalot — Palace Theatre (2006)
31 - Grey Worm - Jacob Anderson - King Lear — Young Vic (2009)
32 - Hizdahr zo Loraq - Joel Fry - Public Enemy — Young Vic (2013)
33 - The Night King - Richard Brake - Camera Obscura — Almeida Rehearsal Room (2002)
34 - Podrick Payne - Daniel Portman - The Collector — The Vaults, Waterloo (2016)
35 - Lancel Lannister - Eugene Simon - For King and Country — Southwark Playhouse (2018)
36 - Myranda - Charlotte Hope - Buried Child — Trafalgar Studios (2016)
37 - Lord of Bones - Ross O'Hennessy - As You Like It — Barbican Theatre (1996)
38 - Janos Slynt - Dominic Carter - Macbeth — Tricycle Theatre (1995)
39 - Dim Dalba - Murray McArthur - A Doll's House — The Playhouse Theatre (1996)
40 - Thin Man - Oengus MacNamara - The Quare Fellow — Tricycle Theatre (2004)
41 - Maggy - Jodhi May - Platonov — Almeida at Kings Cross (2001)
42 - Old Woman - Stella McCusker - Portia Coughlan — Royal Court (1996)
43 - Kevan Lannister - Ian Gelder - The Front Page — Donmar Warehouse (1997)
44 - Pit Announcer - Nicholas Boulton - Henry V — Barbican Theatre (1997)
45 - Winter Town Man - Raymond Keane - The Taming of the Shrew — Shakespeare's Globe (2016)
46 - Merchant Captain - Gary Pillai - Much Ado About Nothing — Olivier Theatre (2007)
47 - High Septon - Paul Bentley - Over the Moon — The Old Vic (2001)
48 - Great Master #3 - Peter Silverleaf - Gamblers — Tricycle Theatre (1992)
49 - Yohn Royce - Rupert Vansittart - Arsenic and Old Lace — Strand Theatre (2003)
50 - Faith Militant #1 - Simon Norbury - Count Oederland — Arcola Theatre (2012)
51 - Lollys Stokeworth - Elizabeth Cadwallader - Killing of Sister George — Arts Theatre (2011)
52 - Derek - Ian Lloyd Anderson - Common — Olivier Theatre (2017)
53 - Foreign Merchant - Allon Sylvain - Oslo — Lyttelton Theatre (2017)
54 - Ternesio Terys - Gary Oliver - The Comedy of Errors — Young Vic (1997)
55 - Clea - Gwyneth Keyworth - As You Like It — Shakespeare's Globe (2015)
56 - Young Cersei Lannister - Nell Williams - The Audience — Gielgud Theatre (2014)
57 - Septa Moelle - Maggie Hayes - Midden — Hampstead Theatre (2001)