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Tamzin Claire Merchant (born 4 March 1987) is a British actress, best known for her roles as Georgiana Darcy in the film Pride & Prejudice (2005), as Catherine Howard in the Showtime series The Tudors (2009–2010) and as Anne Hale in the WGN America series Salem (2014–2017). She wrote the 2021 children's book The Hatmakers.
| Year | Title | Role | Notes |
| 2005 | Pride & Prejudice | Georgiana Darcy | |
| 2008 | Radio Cape Cod | Anna | |
| 2009 | Princess Kaiulani | Alice Davies | |
| 2011 | Jane Eyre | Mary Rivers | |
| Red Faction: Origins | Lyra Mason | ||
| 2012 | Second Wind | Anna | |
| 2014 | Copenhagen | Sandra | |
| 2015 | Dragonheart 3: The Sorcerer's Curse | Rhonu | Direct-to-video film |
| The Messenger | Sarah | ||
| 2016 | The Dancer | Kate | |
| 2017 | Dragonheart: Battle for the Heartfire | Queen Rhonu | Direct-to-video film |
| 2020 | Running Naked | Sara | |
| 2022 | A Midsummer Night's Dream | Helena | |
| James and Lucia | Helen Fleischmann-Joyce |
| Year | Title | Role | Notes |
| 2005 | My Family and Other Animals | Margo Durrell | Television film |
| 2006 | The Good Housekeeping Guide | Sara Fox | |
| Casualty 1906 | Probationer Eastwood | ||
| 2008 | Bonekickers | Helena | Episode: "Army of God" |
| 2009–2010 | The Tudors | Catherine Howard | Main role (seasons 3–4), 6 episodes |
| 2011 | Red_Faction: Origins | Lyra | Television film |
| DCI Banks | Miranda Aspern | Episodes: "Playing with Fire - Part 1", "Playing with Fire - Part 2" | |
| 2012 | The Mystery of Edwin Drood | Rosa Bud | Television film (2 parts) |
| 2013 | Murder on the Home Front | Molly Cooper | Television film |
| 2014–2017 | Salem | Anne Hale | Main roleNominated—Fangoria Chainsaw Award for Best TV Supporting Actress (2017) |
| 2017 | Supergirl | Lyra Strayd | Recurring role, 5 episodes |
| 2019 | Thanks for the Memories | Joyce Conway | 2 episodes (the entire film) |
| 2019–2023 | Carnival Row | Imogen Spurnrose | Main role |
| 2023 | Tom Jones | Aunt Harriet | 4 episodes |
| Year | Title | Artist |
| 2006 | "If You Got the Money" | Jamie T |
| 2007 | "Song 4 Mutya (Out of Control)" | Groove Armada feat Mutya Buena |
| 2014 | "Nobody's Empire" | Belle and Sebastian |
| Year | Title | Role | Notes |
| 2008 | Hay Fever | Jackie | Queens' College, Cambridge |
| 2008 | Dahling You Were Marvellous | Sister 3, Hanger-on | ADC Theatre |
| 2009 | Breakfast at Night | Chorus | ADC Theatre |
| 2009 | The 24hr Plays | Group 1 Producer | ADC Theatre |
| 2010 | Cigarettes and Chocolate | Gemma | ADC Theatre |