| Year | Title | Role | Notes |
| 1996 | Carnal Knowledge | Co-host | 1 series |
| 1996–1998 | Father Ted | Father Noel Furlong | 3 episodes |
| 1997 | Bring Me the Head of Light Entertainment | Himself | |
| 1998–2002 | So Graham Norton | Host | 5 series |
| 2001 | Graham Goes To Dollywood | Himself | |
| The Kumars at No. 42 | |
| Live at the Roundhouse | Comedy special |
| Rex the Runt: A Crap Day Out | The Plants voice | |
| Rex the Runt: Patio | Osvalde Halitosis voice | |
| 2002 | Absolutely Fabulous | Himself | Episode: "Gay" |
| 2002–03 | V Graham Norton | Host | |
| 2003–04 | Tough Crowd with Colin Quinn | Himself | 5 episodes |
| 2004–05 | The Graham Norton Effect | Host | 13 episodes |
| 2005–06 | Graham Norton's Bigger Picture | Himself | |
| Strictly Dance Fever | |
| 2006 | The Last Ever, Ever Footballers' Wives | Brendan Spunk | |
| How Do You Solve a Problem Like Maria? | Host/Presenter | 9 episodes |
| 2007 | When Will I Be Famous? | Himself | |
| Who Do You Think You Are? | |
| Saving Planet Earth | Episode: "Saving Wolves" |
| Kathy Griffin: My Life on the D-List | Episode: "Kathy Goes to London" |
| Live Earth | Himself | TV special documentary |
| Eurovision Dance Contest 2007 | Host | TV special |
| Any Dream Will Do | Presenter | 11 episodes |
| 2007–2019 | The British Academy Television Awards | Host | Host for 2007 to 2011, 2013 to 2016, and 2019. |
| 2007–present | The Graham Norton Show | 32 series |
| 2008 | I'd Do Anything | Presenter | 13 episodes |
| The One and Only | Himself | |
| Eurovision Dance Contest 2008 | Host | TV special |
| 2009 | Totally Saturday | Himself | 1 episode and unaired pilot |
| 2009–10 | Eurovision: Your Country Needs You | Host | 6 episodes |
| 2009–present | Eurovision Song Contest | UK commentator/Co-presenter | Comments grand finals only and co-presented the 2023 final edition |
| 2010 | Over the Rainbow | Host | 18 episodes |
| 2011–12 | Would You Rather...? with Graham Norton | Presenter | BBC America |
| 2015 | Eurovision Song Contest's Greatest Hits | Co-presenter | With Petra Mede |
| Adele at the BBC | Presenter | Television special |
| 2016 | RuPaul's Drag Race All Stars | Himself/Guest judge | Season 2, "Drag Fish Tank" |
| 2016–2019 | Children in Need | Host | With Ade Adepitan and Mel Giedroyc |
| 2017 | Let It Shine | Co-presenter | 6 episodes |
| 2018 | The Biggest Weekend | Himself | |
| 2019–present | RuPaul's Drag Race UK | Himself/Judge | |
| 2020 | British Academy Film Awards | Host | |
| Eurovision: Come Together | |
| Eurovision: Europe Shine a Light | UK commentator | |
| 2021 | Queen of the Universe | Host | |
| Celebrity Gogglebox for Su2c | Himself | Stand Up to Cancer special (Series 18, episode 5) |
| 2022–present | RuPaul's Drag Race: UK vs. the World | Himself/Judge | |
| 2024 | Wheel of Fortune | Host | ITV and Network 10 (Australia) reboot/revivals |
| LOL: Last One Laughing Ireland | Amazon Prime Show |
