Juliet van Kampen Rylance is an English actress and producer, known for her roles in The Knick, McMafia and Perry Mason.

The Knick is an American medical period drama television series on Cinemax created by Jack Amiel and Michael Begler and directed by Steven Soderbergh. The series follows Dr. John W. Thackery and the staff at a fictionalized version of the Knickerbocker Hospital in New York during the early twentieth century. Amiel and Begler wrote the majority of the episodes and are executive producers. Owen, Soderbergh, Gregory Jacobs, and Michael Sugar were executive producers. Steven Katz was the supervising producer and also writer, Michael Polaire was the producer and David Kirchner the associate producer.