Joyce Irene Grenfell, OBE (née Phipps) was a British comedienne, singer, actress and soliloquist. She is remembered for such roles as the gym mistress Miss Gossage in the 1950 film The Happiest Days of Your Life and Ruby Gates in the St Trinian's films. She was known as a writer and performer at a time when it was unusual for a woman of her social background to work in those fields.