Movies:
* Wilde (1997) - Oscar Wilde
* The Hippopotamus (2017) - Ted
* Gosford Park (2001) - Robert Parks
* V for Vendetta (2005) - Gordon Deitrich
* The Hitchhiker's Guide to the Galaxy (2005) - The Guide (voice)
* Stardust (2007) - Ferdy the Fence
* The Importance of Being Earnest (2002) - Algernon Moncrieff
* Alice in Wonderland (2010) - The Cheshire Cat (voice)
* The Hobbit: An Unexpected Journey (2012) - The Master of Lake-town
* The Hobbit: The Desolation of Smaug (2013) - The Master of Lake-town
* The Hobbit: The Battle of the Five Armies (2014) - The Master of Lake-town
* Absolutely Anything (2015) - Neil
* The Greatest Showman (2017) - Mr. Lodger
* The Electrical Life of Louis Wain (2021) - Sir William Gosse
* The Unbearable Weight of Massive Talent (2022) - Javi
* The Menu (2022) - Tyler
* The Whale (2022) - Thomas
* The Adventures of Paddington (2014) - Mr. Gruber (voice)
* Paddington 2 (2017) - Mr. Gruber (voice)
Television:
* Jeeves and Wooster (1990-1993) - Bertie Wooster
* A Bit of Fry and Laurie (1989-1995) - Himself
* Blackadder (1983-1989) - Various roles (Recurring guest star)
* QI (2003-Present) - Host
* Stephen Fry in America (2011) - Himself
* The Secret Life of the Human Body (2009-2010) - Narrator
* The Great British Baking Show (2010-Present) - Narrator (UK version)
* The Simpsons (1989-Present) - Various roles (Recurring guest star)
* The IT Crowd (2006-2013) - Denholm Reynholm
* Kingdom (2007-2008) - Peter Kingdom
* Dirk Gently's Holistic Detective Agency (2016-2017) - The Narrator (voice)
* The Graham Norton Show (2007-Present) - Regular guest
* The Apprentice (2005-Present) - Narrator (UK version)
* Dragons' Den (2005-Present) - Narrator (UK version)
* Have I Got News For You (1990-Present) - Regular guest
* The Big Fat Quiz of the Year (2006-Present) - Regular guest
* The Graham Norton Show (2007-Present) - Regular guest
* The Jonathan Ross Show (2001-Present) - Regular guest
Other:
* The Diary of a CEO - Podcast (Host)
* Mythos - Audiobook (Narrator)
* Shakespeare: The Animated Tales - Narrator (voice)
* Stephen Fry's Great Big Story - Audiobook (Narrator)
This list isn't exhaustive, but it covers some of the most notable and popular projects Stephen Fry has been involved with.