Television:
* The Mighty Boosh (2004-2007) - as "The Hitman"
* The Catherine Tate Show (2004-2006) - as "Derek"
* The Armando Iannucci Shows (2001-2002) - as "Various Characters"
* The IT Crowd (2006-2013) - as "Roy"
* Bluestone 42 (2013-2017) - as "Sergeant "Smudge" Smith"
* Detectorists (2014-2017) - as "Lance"
* The Windsors (2016-present) - as "Prince Andrew"
* After Life (2019-present) - as "Lenny"
* Ghosts (2019-present) - as "The Captain"
Film:
* The Mighty Boosh: The Journey of the Boosh (2006) - as "The Hitman"
* The IT Crowd: The Movie (2013) - as "Roy"
* Mindhorn (2016) - as "Barry"
* The Electrical Life of Louis Wain (2021) - as "Mr. B"
Other:
* Dean Atkinson: The Man Who Thinks He's a Hitman (2010) - stand-up comedy special
This is not an exhaustive list, but it highlights some of his most prominent roles in both television and film. Dean Atkinson is a versatile actor who has brought humor and personality to a wide range of characters.