Movies:
* Braveheart (1995) - as "Morris"
* The Boondock Saints (1999) - as "Murphy MacManus"
* Snatch (2000) - as "Brick Top"
* Gladiator (2000) - as "Cicero"
* The Boondock Saints II: All Saints Day (2009) - as "Murphy MacManus"
* Smokin' Aces (2006) - as "Darius"
* The Last Stand (2013) - as "Burnett"
* Guardians of the Galaxy (2014) - as "Fin Fang Foom" (voice)
* Sons of Anarchy (2014) - as "Filip "Chibs" Telford" (credited as "Tommy Flanagan")
* Iceman (2014) - as "The Professor"
* The Last Face (2016) - as "Jack"
* The Big Lebowski (1998) - as "Ultraman" (uncredited)
* The Jacket (2005) - as "Don" (uncredited)
* The Three Musketeers (2011) - as "Rochefort" (uncredited)
Television:
* Sons of Anarchy (2008-2014) - as "Filip "Chibs" Telford"
* The Shield (2004-2008) - as "Tommy"
* The Americans (2013) - as "Arkady Ivanov"
* American Gods (2017-2021) - as "The Technical Boy"
* Mayans M.C. (2018-present) - as "Filip "Chibs" Telford"
* Westworld (2016-present) - as "Martin Connells"
* The Expanse (2015-2022) - as "Camina Drummer"
* "The Twilight Zone" (2019) - as "The Man"
* "The Witcher" (2023) - as "Martin"
This is not an exhaustive list, but it includes some of his most notable roles. He has also had roles in other TV shows and films, both major and independent.
Tommy Flanagan is a respected actor known for his strong and often menacing presence on screen.