
Thomasin Harcourt McKenzie (born 26 July 2000) is an actress from New Zealand. After a minor role in The Hobbit: The Battle of Five Armies, she rose to critical prominece with the lead role in Debra Granik's 2018 drama film Leave No Trace. After supporting roles in the 2019 films The King, Jojo Rabbit and True History of the Kelly Gang, as well as the 2021 thriller Old, Edgar Wright's psychological horror film Last Night in Soho established her as one of the industry's lead actresses.

The Late Show with Stephen Colbert
TV • 2015

Pantheon
TV • 2022

The Hobbit: The Battle of the Five Armies
MOVIE • 2014

The Testament of Ann Lee
MOVIE • 2025

Fackham Hall
MOVIE • 2025

The King
MOVIE • 2019

Jojo Rabbit
MOVIE • 2019

Old
MOVIE • 2021

Life After Life
TV • 2022

Last Night in Soho
MOVIE • 2021

The Power of the Dog
MOVIE • 2021

Totally Completely Fine
TV • 2023

Joy
MOVIE • 2024

Eileen
MOVIE • 2023

Leave No Trace
MOVIE • 2018

Lost Girls
MOVIE • 2020

True History of the Kelly Gang
MOVIE • 2019

The Uprising
MOVIE • 2026