Hazel Terry (23 January 1918 – 12 October 1974) was an English actress. A member of the theatrical dynasty the Terry family she had a successful stage career, and also made some cinema films. Among her roles was Ophelia in Hamlet opposite her cousin John Gielgud.
Terry was born in London, the daughter of the actor Dennis Neilson-Terry and his wife Mary Glynne. Her first role was at the age of 17 as the page in Henry IV, Part I with George Robey as Falstaff at His Majesty's in 1936. Later in that year she played Beauty in Everyman. As her cousin John Gielgud had done early in his career, she joined the Oxford Repertory company; her roles included Olivia in Twelfth Night. In 1938 she made her New York debut playing Hazel in J B Priestley's Time and the Conways, later repeating the role on tour in Britain. She made her film debut in 1935 in The Marriage of Corbal.
In the 1938 Malvern Festival season she appeared in The Last Trump, which transferred to the West End. Following what The Times called "various unremarkable engagements" she starred in a year-long ENSA tour as Amanda in Noël Coward's Private Lives. In 1944 she understudied Peggy Ashcroft as Ophelia in Gielgud's last London Hamlet, and had the chance to play the role in Manchester and London.