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Oona Castilla Chaplin (Spanish: [ˈuna kasˈtiʎa ˈtʃaplin]; born 4 June 1986) is an actress. Her roles include Talisa Maegyr in the HBO TV series Game of Thrones, Kitty Trevelyan in the BBC drama The Crimson Field, Zilpha Geary in the series Taboo, and Varang in the Avatar film series.
| † | Denotes film or TV productions that have not yet been released |
| Year | Title | Role | Notes |
| 2008 | Inconceivable | Laura Chappel | |
| First, Love? | Laura – Flower Girl | Short film | |
| Quantum of Solace | Perla de las Dunas receptionist | ||
| 2009 | Imago Mortis | Arianna | |
| Pelican Blood | Linda | ||
| 2010 | High and Dry | Sandra | Short film |
| Vampyre compendium | Short film | ||
| 2011 | ¿Para qué sirve un oso? | Rosa | |
| The Devil's Double | Beauty | ||
| Salar | Sandra | Short film | |
| 2012 | The Sorrows | Sarah | |
| 2013 | Powder Room | Jess | |
| What if... | Julianne | ||
| 2014 | Purgatorio | Marta | |
| Aloft | Alice | ||
| 2015 | The Longest Ride | Ruth Levinson | |
| Dancing for my Havana | Rosa | ||
| 2016 | Realive | Naomi | |
| 2017 | Anchor and Hope | Eva | |
| 2020 | Epicentro | Herself | Documentary |
| 2022 | Lullaby | Rachel Brown | |
| 2025 | Avatar: Fire and Ash | Varang | |
| 2029 | Avatar 4 † | Filming |
| Year | Title | Role | Notes |
| 2007 | Spooks | Kate | Episode: "The Virus (Part 2)" |
| 2008 | Spooks: Code 9 | Episode 2 | |
| 2009 | Married Single Other | Fabiana | 3 episodes |
| 2010 | El Gordo: Una historia verdadera | Silvia | 2 episodes |
| 2011–2012 | The Hour | Marnie Madden | 12 episodes |
| 2012 | Sherlock | Jeanette | Episode: "A Scandal in Belgravia" |
| 2012–2013 | Game of Thrones | Talisa Maegyr | 11 episodes |
| 2013 | Dates | Mia | 5 episodes |
| 2014 | Inside No. 9 | Sabrina | Episode: "A Quiet Night In" |
| The Crimson Field | Kitty Trevelyan | Main role, 6 episodes | |
| Black Mirror | Greta | Feature-length special: "White Christmas" | |
| 2016 | El padre de Caín | Mercedes | |
| 2017 | Taboo | Zilpha Geary | Main cast, 8 episodes |
| 2018 | My Dinner with Hervé | Katie | Television film |
| 2020 | The Comey Rule | Lisa Page | Miniseries |
| 2022 | Made for Love | Alice | Episode: "Alice? Are You Listening?" |
| Treason | Maddy De Costa | Main cast, 5 episodes |