Here's a list of actors from Season 2 of Game of Thrones that I have seen on stage (mostly London theatre)
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 2 - Cast list used to make this list
01 - Catelyn Stark - Michelle Fairley - Factory Girls — Tricycle Theatre (1990)
02 - Tywin Lannister - Charles Dance - Good — Donmar Warehouse (1999)
03 - Petyr 'Littlefinger' Baelish - Aidan Gillen - The Water Engine — Hampstead Theatre (1989)
04 - Davos Seaworth - Liam Cunningham - Goodnight Siobhan — Royal Court (1990)
05 - Jorah Mormont - Iain Glen - King Lear — Royal Court (1993)
06 - Joffrey Baratheon - Jack Gleeson - Bears in Space — Soho Theatre Upstairs (2015)
07 - Jon Snow - Kit Harington - posh — Royal Court Theatre (2010)
08 - Theon Greyjoy - Alfie Allen - The Spoils — Trafalgar Studios (2016)
09 - Stannis Baratheon - Stephen Dillane - Long Day's Journey Into Night — Lyttelton Theatre (1991)
10 - Bronn - Jerome Flynn - Timon of Athens — Young Vic (1991)
11 - Arya Stark - Maisie Williams - I and You — Hampstead Theatre (2018)
12 - Robb Stark - Richard Madden - Be Near Me — Donmar Warehouse (2009)
13 - Lord Varys - Conleth Hill - The Government Inspector — Tricycle Theatre (1994)
14 - Margaery Tyrell - Natalie Dormer - 0.45 — Michael Frayn Space, Hampstead Theatre (2010)
15 - Hallyne - Roy Dotrice - Brief Lives — Richmond Theatre (2008)
16 - Grand Maester Pycelle - Julian Glover - Julius Caesar — Barbican Theatre (1996)
17 - Lancel Lannister - Eugene Simon - For King and Country — Southwark Playhouse (2018)
18 - Matthos Seaworth - Kerr Logan - Teh Internet Is Serious Business — Royal Court Theatre (2014)
19 - Maester Luwin - Donald Sumpter - Hamlet — Young Vic (1999)
20 - Renly Baratheon - Gethin Anthony - What Fatima Did — Hampstead Theatre (2009)
21 - Craster - Robert Pugh - The Iceman Cometh — Almeida Theatre (1998)
22 - Rodrik Cassel - Ron Donachie - Scenes from the Big Picture — Cottesloe Theatre (2003)
23 - Osha - Natalia Tena - The Clean House — Richmond Theatre (2008)
24 - Spice King - Nicholas Blane - King Lear — Lyttelton Theatre (1990)
25 - Balon Greyjoy - Patrick Malahide - In the Ruins — Royal Court (1990)
26 - Roose Bolton - Michael McElhatton - Shining City — Royal Court Theatre (2004)
27 - Xaro Xhoan Daxos - Nonso Anozie - Edmond — Olivier Theatre (2003)
28 - Janos Slynt - Dominic Carter - Macbeth — Tricycle Theatre (1995)
29 - Gendry - Joe Dempsie - Even Stillness Breathes Softly Against A Brick Wall — Soho Theatre (2013)
30 - Podrick Payne - Daniel Portman - The Collector — The Vaults, Waterloo (2016)
31 - Talisa Maegyr - Oona Chaplin - Love's Labour's Lost — Shakespeare's Globe (2007)
32 - Ygritte - Rose Leslie - Bedlam — Shakespeare's Globe (2010)
33 - Grenn - Mark Stanley - Events While Guarding the Bofors Gun — Finborough Theatre (2012)
34 - Mandon Moore - James Doran - Pumpgirl — Bush Theatre (2006)
35 - Baratheon Officer - Kieran Cunningham - The Quare Fellow — Tricycle Theatre (2010)
36 - Dagmer Cleftjaw - Ralph Ineson - Hangmen — Royal Court Theatre (2015)
37 - Quaithe - Laura Pradelska - The Screenwriter's Daughter — Leicester Square Theatre (2015)
38 - Qhorin Halfhand - Simon Armstrong - Hamlet — Shakespeare's Globe Theatre (2011)
39 - Yara Greyjoy - Gemma Whelan - Dark Vanilla Jungle — Soho Theatre (2014)
40 - Rickard Karstark - John Stahl - Serjeant Musgraves Dance — Greenwich Theatre (2003)
41 - Alton Lannister - Karl Davies - Henry V — Hampstead Theatre (2012)
42 - Amory Lorch - Fintan McKeown - Hamlet — Olivier Theatre (1989)
43 - Maester Cressen - Oliver Ford Davies - Hamlet — Olivier Theatre (1989)
44 - Gilly - Hannah Murray - Martine — Finborough Theatre (2014)
45 - Kevan Lannister - Ian Gelder - The Front Page — Donmar Warehouse (1997)
46 - High Septon - David Verrey - The Coast of Utopia - Salvage — Olivier Theatre (2002)
47 - Salladhor Saan - Lucian Msamati - ID — Almeida Theatre (2003)
48 - The Tickler - Anthony Morris - Lay Me Down — Softly Tricycle Theatre (2011)
49 - Biter - Gerard Jordan - The Force of Change — Royal Court Theatre Upstairs (2000)
50 - Farlen - Peter Ballance - Love and the Bottle — Tricycle Theatre (1992)
51 - Captain's Daughter - Amy Dawson - Children's Hour — Comedy Theatre (2011)
52 - Rennick - David Fynn - She Stoops to Conquer — Olivier Theatre (2012)
53 - Rakharo - Elyes Gabel - Fragile Land — Hampstead Theatre (2003)
54 - Old Woman Prisoner - Gina Moxley - Our Father — Almeida Theatre (1999)
55 - Goldcloak - Sam Callis - The Tempest — The Old Vic (2003)
56 - Jaqen's Disguise - Patrick O'Kane - The Strip — Royal Court (1995)
57 - Stark Soldier - Michael Shaeffer - London Road — Cottesloe Theatre (2011)
58 - Soldier Tom (as Christopher Reilly) - Chris Reilly - 0.45 — Michael Frayn Space, Hampstead Theatre (2010)