Mia Honey Winslet Threapleton (born 12 October 2000) is an English actress. The daughter of actress Kate Winslet and painter-filmmaker Jim Threapleton, she made her film debut at the age of 13 with a non-speaking cameo in the period drama A Little Chaos (2014). On television, she co-starred with her mother in the episode "I Am Ruth" (2022) of the anthology series I Am..., and starred in the period drama series Dangerous Liaisons (2022) and The Buccaneers (2023). She had her first lead role in a feature film in the black comedy The Phoenician Scheme (2025).

Filmography

• 2025The Phoenician Scheme — Sister Liesl
• 2025Two Places at Once — Danni
• 2024Firebrand — Joan
• 2024Scoop — Maid
• 2023Dropping — Nora
• 2023Shadows — Alma
• The Buccaneers — Honoria Marable
• I Am... — Freya
• 2015A Little Chaos — Helene
• A Woman in the Sun
• Sacrifice
• The Price of Peace — Mary Churchill

Appearances as themselves (1)

• The Kelly Clarkson Show — Self