Mark Gatiss - Born 17 October 1966, is an English actor, comedian, screenwriter and novelist. He is known as a member of the comedy team The League of Gentlemen alongside Reece Shearsmith, Steve Pemberton and co-writer Jeremy Dyson, and has both written for and acted in the TV series Doctor Who and Sherlock, the latter of which he also co-created.
| Movie | Mission: Impossible - The Final Reckoning | Angstrom | 2025-05-17 |
| Series | Bookish | Gabriel Book | 2025-07-16 |
| Movie | The Fantastic 4: First Steps | Ted Gilbert | 2025-07-23 |
| Series | Moonflower Murders | Frank Parris / Oscar Berlin | 2024-11-16 |
| Movie | Mission: Impossible - Dead Reckoning Part One | NSA | 2023-07-08 |
| Series | Nolly | Larry Grayson | 2023-02-02 |
| Movie | Operation Mincemeat | Ivor Montazac | 2022-04-01 |
| Movie | A Christmas Carol: A Ghost Story | Jacob Marley | 2022-11-27 |
| Movie | The Road Dance | Doctor MacLean | 2022-05-20 |
| Movie | Locked Down | Donald | 2021-02-25 |
| Movie | A Silent Imprisonment | Mr Murphy | 2021-04-01 |
| Movie | The Sparks Brothers | Self | 2021-06-18 |
| Movie | The Amazing Mr. Blunden | Mr. Wickens | 2021-12-20 |
| Series | Dracula | Frank Renfield | 2020-01-01 |
| Movie | In Search of Dracula | Himself - Presenter | 2020-01-03 |
| Movie | Tales of the Uncanny | Self | 2020-10-31 |
| Movie | Brexit: The Uncivil War | Peter Mandelson (voice) | 2019-01-19 |
| Movie | The Favourite: Unstitching the Costume Drama | Self | 2019-03-05 |
| Movie | The Mercy | Ronald Hall | 2018-02-09 |
| Movie | The League of Gentlemen - Live Again! | Various Characters | 2018-11-19 |
| Movie | Christopher Robin | Giles Winslow | 2018-08-01 |
| Movie | The Favourite | Lord Marlborough | 2018-11-23 |
| Movie | The Dead Room | Radio Announcer (voice) | 2018-12-24 |
| Movie | National Theatre Live: The Madness of George III | George III | 2018-11-20 |
| Movie | Against the Law | Dr. Landers | 2017-03-16 |
| Series | Gunpowder | Sir Robert Cecil | 2017-10-21 |
| Movie | Doctor Who: Twice Upon a Time | The Captain | 2017-12-25 |
| Movie | Dad's Army | Colonel Theakes | 2016-02-05 |
| Movie | Sherlock: The Abominable Bride | Mycroft Holmes | 2016-01-01 |
| Movie | Mark Gatiss: A Study in Sherlock | Himself | 2016-01-11 |
| Movie | Our Kind of Traitor | Billy Matlock | 2016-05-05 |
| Movie | Denial | Professor Robert Jan van der Pelt | 2016-09-30 |
| Movie | Absolutely Fabulous: The Movie | Joel | 2016-07-01 |
| Series | Thunderbirds Are Go! | Dr. Quentin Questa (voice) | 2015-04-04 |
| Series | Wolf Hall | Stephen Gardiner | 2015-01-21 |
| Movie | The Vote | Steven Crosswell | 2015-05-07 |
| Movie | Coalition | Peter Mandelson | 2015-03-28 |
| Movie | Premium Bond with Mark Gatiss and Matthew Sweet | Himself | 2015-10-28 |
| Series | London Spy | Rich | 2015-11-09 |
| Movie | Victor Frankenstein | Dettweiler | 2015-11-10 |
| Movie | Unlocking Sherlock | Himself / Mark Gatiss | 2014-01-19 |
| Movie | National Theatre Live: Coriolanus | Menenius Agrippa | 2014-01-29 |
| Movie | 50 Years of BBC Two Comedy | Self | 2014-05-24 |
| Series | The Real History of Science Fiction | Himself - Narrator (voice) | 2014-04-19 |
| Series | Mapp and Lucia | Major Benjamin 'Benjy' Flint | 2014-12-29 |
| Movie | The Celestial Toyroom | 2013-03-11 | |
| Movie | M.R. James: Ghost Writer | Presenter | 2013-12-25 |
| Series | Dr. Forever! | Himself | 2013-03-11 |
| Movie | Back to Black: The Making of Dracula Prince of Darkness | Self - Actor and Writer | 2012-04-30 |
| Movie | Horror Europa with Mark Gatiss | Self - Host | 2012-10-30 |
| Series | The Crimson Petal and the White | Henry Rackham Junior | 2011-04-06 |
| Movie | Cleaning Up | Mr Jackson | 2011-09-15 |
| Series | Game of Thrones | Tycho Nestoris | 2011-04-17 |
| Movie | Worried About the Boy | Malcolm McLaren | 2010-05-16 |
| Series | Sherlock | 2010-07-25 | |
| Series | Mid Morning Matters with Alan Partridge | Unknown | 2010-11-05 |
| Series | A History of Horror | Self - Presenter | 2010-10-11 |
| Movie | The First Men in the Moon | Cavor | 2010-10-19 |
| Movie | New Town | Duff Purves | 2009-04-14 |
| Series | Being Human | Unknown | 2009-01-25 |
| Series | Psychoville | Unknown | 2009-06-18 |
| Movie | Spanish Flu: The Forgotten Fallen | Ernest Dunks | 2009-08-05 |
| Series | Doctor Who Greatest Moments | Himself | 2009-08-20 |
| Series | Sense and Sensibility | John Dashwood | 2008-01-01 |
| Series | Clone | Colonel Black | 2008-11-17 |
| Series | Crooked House | The Curator | 2008-12-22 |
| Movie | Grindhouse | (segment "Don't") (uncredited) | 2007-04-06 |
| Series | Derren Brown: Trick or Treat | Himself | 2007-04-13 |
| Movie | Consenting Adults | PC Butcher | 2007-09-04 |
| Movie | The Worst Journey in the World | Apsley Cherry-Garrard | 2007-04-29 |
| Series | Jekyll | Robert Louis Stevenson | 2007-06-16 |
| Movie | Starter for 10 | Bamber Gascoigne | 2006-09-13 |
| Series | Torchwood | Unknown | 2006-10-22 |
| Movie | Free Jimmy | Jakki (voice) | 2006-04-21 |
| Movie | Fear of Fanny | Johnnie Cradock | 2006-10-23 |
| Movie | The Wind in the Willows | Rat | 2006-12-18 |
| Movie | The League of Gentlemen Are Behind You | Hilary Briss / Mickey Michaels / Val Denton / Les McQueen / Lance Longthorne / Alvin Steele / Phil Proctor / Mrs Beasley / Mick McNamara / Neds / Lotte Lipp / Brian Morgan / Dr Chinnery / Iris Krell / Bobbin | 2006-11-20 |
| Movie | The Hitchhiker's Guide to the Galaxy | Additional Vogon Voices | 2005-04-28 |
| Movie | The Quatermass Experiment | John Paterson | 2005-04-02 |
| Series | Doctor Who Confidential | Unknown | 2005-03-26 |
| Movie | Doctor Who: A New Dimension | Self | 2005-03-26 |
| Movie | The League of Gentlemen's Apocalypse | Various Characters | 2005-06-03 |
| Series | Doctor Who | Gantok | 2005-03-26 |
| Movie | Don't Crash: The Documentary of the Making of the Movie of the Book of the Radio Series of 'The Hitchhiker's Guide to the Galaxy' | Self - The League of Gentlemen | 2005-09-05 |
| Movie | Return of the Goodies | Himself | 2005-12-30 |
| Movie | Wallace & Gromit: The Curse of the Were-Rabbit | Miss Blight (voice) | 2005-09-15 |
| Movie | Match Point | Ping-Pong Player | 2005-10-26 |
| Movie | Bring Something Back: The Making of 'The Quatermass Experiment' | 2005-10-24 | |
| Series | Funland | Unknown | 2005-10-23 |
| Series | Catterick | Peter | 2004-02-15 |
| Series | Nighty Night | Glenn Bulb | 2004-01-06 |
| Movie | Sex Lives of the Potato Men | Jeremy | 2004-02-20 |
| Movie | Global Conspiracy? | Terry Scanlon | 2004-05-10 |
| Movie | Shaun of the Dead | Radio Presenter With 'Spaceship' Theory / Wildlife voiceover (voice) (uncredited) | 2004-04-09 |
| Movie | Agatha Christie: A Life in Pictures | Kenyon | 2004-09-22 |
| Movie | Spaced: Skip to the End | Self | 2004-04-12 |
| Series | QI | Unknown | 2003-09-11 |
| Movie | Bright Young Things | House Agent | 2003-10-03 |
| Series | Little Britain | Unknown | 2003-09-16 |
| Movie | The Cicerones | John Trant | 2002-01-01 |
| Movie | Robbie the Reindeer: Legend of the Lost Tribe | Viking (voice) | 2002-12-13 |
| Movie | Surrealissimo: The Trial of Salvador Dali | Louis Aragon | 2002-03-02 |
| Movie | Birthday Girl | Porter | 2001-09-06 |
| Series | Friday Night with Jonathan Ross | Unknown | 2001-11-02 |
| Series | Dr. Terrible's House of Horrible | Hang Man Chang | 2001-11-12 |
| Movie | The League of Gentlemen: Live at Drury Lane | various | 2001-11-19 |
| Series | Randall & Hopkirk (Deceased) | Unknown | 2000-03-18 |
| Series | The League of Gentlemen | 1999-01-11 | |
| Series | Spaced | Unknown | 1999-09-24 |
| Series | This Morning with Richard Not Judy | 1998-02-15 | |
| Series | In the Red | Junior Detective | 1998-05-26 |
| Movie | Bidding Adieu: A Video Diary | Self - Interviewer | 1996-04-01 |
| Movie | PROBE: Unnatural Selection | Mr. Emerson | 1996-10-01 |
| Movie | Highgate House of Horror | Mr Banham | 1995-01-01 |
| Movie | PROBE: The Devil of Winterborne | Georgie | 1995-08-01 |
| Movie | Stranger than Fiction 2: From Script to Screen | 1995-01-01 | |
| Movie | PROBE: The Zero Imperative | Dr. William Bruffin | 1994-01-01 |
| Series | The Dwelling Place | Bowmer | 1994-05-08 |
| Series | Harry | Diner Manager | 1993-09-18 |
| Series | Agatha Christie's Poirot | Leonard Boynton | 1989-01-08 |
| Series | A Ghost Story for Christmas | Curator | 1971-12-24 |