Olivia O'Neill
Olivia O’Neill is an American actress known for her role as Katherine in The Exorcist: Believer (2023), a supernatural horror film directed by David Gordon Green. Born on January 1, 2008, in New York City, she is currently 15 years old. She began her acting career in regional theater, performing in productions such as Chitty Chitty Bang Bang and Matilda: The Musical with 5-Star Theatricals. In The Exorcist: Believer, O’Neill portrays Katherine, one of two 13-year-old girls who experience disturbing supernatural events after going missing. The film also stars Lidya Jewett and features Ellen Burstyn reprising her role as Chris MacNeil. The movie was released on October 6, 2023, and is part of a planned trilogy that continues the legacy of the original 1973 classic. Beyond her film debut, O’Neill has appeared in the TV mini-series Behind the Resume (2023), where she discussed her experiences and insights into the acting profession. Off-screen, O’Neill is active on social media, sharing lifestyle and behind-the-scenes content with her followers. She is the third of four siblings and was raised in Southern California.
