Janet Key (10 July 1945 – 26 July 1992) was an English actress with a varied career in theatre, film and television from the late 1960s until her death.
Between 1970 and 1975 Key appeared in four horror films, as well as the comedy Percy and the historical drama Lady Caroline Lamb. Her only other cinema appearance came later in Nineteen Eighty-Four, although she also featured in several made-for-TV dramas, including the role of Charmian in the Jonathan Miller production of Antony and Cleopatra for the ambitious BBC Television Shakespeare project.