**Ingrid Bisu** (Bucharest, 1987) is a Romanian actress, screenwriter, and film producer, whose career has predominantly flourished within the horror genre.

Known for her frequent collaboration with director James Wan and the production company Atomic Monster, Bisu has played key roles in several successful productions. Among her most significant performances are the unsettling Sister Oana in *The Nun* (2018) and co-star Winnie in *Malignant* (2021), a film for which she also co-wrote the story.

Her style is characterized by the ability to infuse personality into supporting characters, often marked by a mix of vulnerability and unsettling eccentricity, contributing to memorable moments and a distinctive atmosphere. She has also appeared in the award-winning German drama *Toni Erdmann* (2016), demonstrating versatility outside of the horror genre.