
Lucy Boynton (born January 17, 1994) is a British actress. Her first professional role was as the young Beatrix Potter in Miss Potter (2006), for which she was nominated for the Young Artist Award for Best Performance in a Feature Film – Supporting Young Actress. She went on to play Posy Fossil in 2007 in the BBC film Ballet Shoes. She also played the role of Margaret Dashwood in the BBC serial Sense and Sensibility (2008). She portrayed the mysterious model Raphina in the 2016 film Sing Street, a ghost Polly Parsons in the 2016 film I Am the Pretty Thing That Lives in the House and Countess Helena Andrenyi in the 2017 adaptation of Murder on the Orient Express.
She played Freddie Mercury's partner, Mary Austin, in the biopic Bohemian Rhapsody (2018), for which earned the cast a nomination for Outstanding Performance by a Cast in a Motion Picture at the 25th Screen Actors Guild Awards. She portrayed Astrid Sloan in the Netflix series The Politician (2019–2020).

Barbie
2023 · as Proust Barbie

Bohemian Rhapsody
2018 · as Mary Austin

Murder on the Orient Express
2017 · as Countess Elena Andrenyi

Apostle
2018 · as Andrea

The Pale Blue Eye
2022 · as Lea Marquis

Sing Street
2016 · as Raphina

Miss Potter
2006 · as Young Beatrix

Ballet Shoes
2008 · as Posy Fossil

Chevalier
2023 · as Marie Antoinette

The Greatest Hits
2024 · as Harriet Gibbons

Rebel in the Rye
2017 · as Claire Douglas

Locked Down
2021 · as Charlotte

Don't Knock Twice
2017 · as Chloe

The Blackcoat's Daughter
2017 · as Rose

The Beatles: George
2028 · as Jane Asher

The Beatles: John
2028 · as Jane Asher

The Beatles: Paul
2028 · as Jane Asher

See You When I See You
2026 · as Emily Whistler