EC
Elaine Cassidy Filmography
| 2025 | Salvable · as Elaine |
| 2024 | Belgravia: The Next Chapter (TV Series) · as Davison |
| 2024 | Sanctuary: A Witch's Tale (TV Series) · as Sarah Fenn |
| 2023 | The Last Kingdom: Seven Kings Must Die · as Queen Eadgifu |
| 2022 | The Wonder · as Rosaleen O'donnell |
| 2021 | Intruder (TV Series) · as Rebecca Hickey |
| 2020 | The Dark Tower · as Gabrielle Deschain |
| 2018 | Strangeways Here We Come · as Steph Nolan |
| 2018 | A Discovery of Witches (TV Series) · as Louisa De Clermont |
| 2017 | Acceptable Risk (TV Series) · as Sarah Manning |
| 2016 | Acres & Acres · as Rachel |
| 2016 | Property of the State · as Margaret |
| 2016 | National Theatre Live: Les Liaisons Dangereuses · as Madame De Tourvel |
| 2016 | The Program: Behind the Scenes · as Betsy Andreu |
| 2016 | The Program: David Walsh · as Betsy Andreu |
| 2015 | The Program · as Betsy Andreu |
| 2015 | No Offence (TV Series) · as Dc Dinah Kowalska |
| 2014 | |
| 2012 | Hannah Cohen's Holy Communion · as Rachel Cohen |
| 2012 | The Paradise (TV Series) · as Katherine Glendenning |
| 2011 | Just Henry · as Maureene |
| 2011 | The Miraculous Year · as Brona Mckinney |
| 2009 | Harper's Island (TV Series) · as Abby Mills |
| 2008 | Little White Lie · as Annie Mulcahy |
| 2007 | A Room with a View · as Lucy Honeychurch |
| 2007 | When Did You Last See Your Father? · as Sandra |
| 2006 | The Truth · as Candy |
| 2005 | The Ghost Squad (TV Series) · as Amy Harris |
| 2005 | Fingersmith (TV Series) · as Maud Lilly |
| 2005 | Uncle Adolf · as Geli Raubal |
| 2003 | Watermelon · as Anna Ryan |
| 2002 | The Bay of Love and Sorrows · as Carrie Matchett |
| 2002 | The Lost World · as Agnes Cluny |
| 2001 | The Lost World (TV Series) · as Agnes Cluny |
| 2001 | Disco Pigs · as Runt / Sinead |
| 2001 | The Others · as Lydia |
| 1999 | Felicia's Journey · as Felicia |
| 1996 | The Sun, the Moon and the Stars · as Shelley |
| 1993 | Mission Top Secret (TV Series) |