Jennifer Mary Hilary (14 December 1942 – 6 August 2008) was a British actress of stage, film and television. Her first acclaimed stage performance was as "Milly" in Henry James' The Wings of the Dove, which marked her debut on the West End.

Born at Frimley, Surrey, she trained at RADA, and began her acting career with the Liverpool Playhouse in April 1961, aged 18. Her first role was as Nina in The Seagull. She would go on to play such characters as Lady Teazle (The School for Scandal), Isabel (The Enchanted), Cilla Curtis (Amateur Means Lover) and Cecily Cardew (The Importance of Being Earnest).