Justine Mitchell is an Irish actress. She is best known for playing Elaine Lynch in the Irish thriller series Smother (2021-2023) and for portraying Joan Hathaway in Chloé Zhao's 2025 period drama film Hamnet.
The Crown
Series • 2016
Waking the Dead
Series • 2001
Industry
Series • 2020
Black Doves
Series • 2024
Derry Girls
Series • 2018
Hamnet
Movie • 2025
How to Get to Heaven from Belfast
Series • 2026
Storyland
Series • 2009
Smother
Series • 2021
A Spy Among Friends
Series • 2022
Pure
Series • 2019
The Dry
Conversations with Friends
Amber
Series • 2014
Imagine Me & You
Movie • 2006
These Sacred Vows
Cheat
A Cock and Bull Story
Movie • 2005
The Murder in Angel Lane
Movie • 2013
National Theatre at Home: Summerfolk
Movie • 2026
The Stag
Song of Songs
Goldfish Memory
Movie • 2003
Conspiracy of Silence
Citizen Verdict
Maryland
Movie • 2022