Elaine Cassidy

Actor 1993–2025 (32 year career)

6.2 avg rating

Highest Rated

A Discovery of Witches

2018 · as Louisa de Clermont

7.8

The Others

2001 · as Lydia

7.6

No Offence

2015 · as Dinah Kowalska

7.5

Known For

Film

The Others

Lydia

Film

The Last Kingdom: Seven Kings Must Die

Queen Eadgifu

Film

The Loft

Ellie Seacord

Film

The Wonder

Rosaleen O'Donnell

Film

The Program

Betsy Andreu

Film

Harper's Island

Abby Mills

Film

Fingersmith

Maud Lilly

Film

The Paradise

Katherine Glendenning

Filmography

Acting (39)

Movies (26)

Salvable

2025

as Elaine

6.2

The Colour of My Room

2024

The Last Kingdom: Seven Kings Must Die

2023

as Queen Eadgifu

7.2

The Wonder

2022

as Rosaleen O'Donnell

6.6

The Dark Tower

2020

as Gabrielle Deschain

2.0

Strangeways Here We Come

as Steph Nolan

Mum's List

as Rachel

National Theatre Live: Les Liaisons Dangereuses

2016

as Madame de Tourvel

6.0

Property of the State

as Margaret

The Program

as Betsy Andreu

The Loft

as Ellie Seacord

Hannah Cohen's Holy Communion

as Rachel Cohen

Just Henry

as Maureene

Little White Lie

as Annie Mulcahy

And When Did You Last See Your Father?

as Sandra

A Room with a View

as Lucy Honeychurch

The Truth

as Candy

Uncle Adolf

as Geli Raubal

Watermelon

as Anna Ryan

The Bay of Love and Sorrows

as Carrie Matchett

The Others

as Lydia

The Lost World

as Agnes Cluny

Disco Pigs

as Runt / Sinead

Felicia's Journey

as Felicia

The Sun, The Moon and The Stars

1996

as Shelley

The Night House

as Jenny

Television (13)

Belgravia: The Next Chapter

2024

as Davison

7.4

Sanctuary: A Witch's Tale

as Sarah Fenn

Intruder

as Rebecca Hickey

A Discovery of Witches

2018

as Louisa de Clermont

Acceptable Risk

as Sarah Manning

No Offence

as Dinah Kowalska

The Paradise

as Katherine Glendenning

Harper's Island

as Abby Mills

A Room with a View

as Lucy Honeychurch

Fingersmith

as Maud Lilly

The Ghost Squad

as Amy Harris

The Lost World

as Agnes Cluny

Mission Top Secret