Sophie Bathsheba Thatcher (born October 18, 2000) is an American actress and musician. After beginning as a child actress appearing in stage plays and guest television roles, she made her feature film debut in Prospect (2018). Thatcher had her breakthrough role in the series Yellowjackets (2021–present). She has since appeared in The Book of Boba Fett (2022), The Boogeyman (2023), Heretic (2024), and Companion (2025). As a musical artist, Thatcher released her debut EP, Pivot & Scrape, in 2024.