Irene Margaret Clifford (née Blackford) (17 November 1898 – 7 April 1996), known professionally as Colleen Clifford, was a British-born performer, who worked in her native England as well as New Zealand and, later in her career, Australia. As an actress she worked in all facets of the industry: radio, stage, television and film. She was also a theatre founder, director and producer, coloratura soprano, dancer, comedian and classical pianist who was a specialist in voice production, drama and music. She was also a commercial advertiser, spokeswoman and charity worker and released her own memoirs. She worked across stage and screen with stars including Laurence Olivier, Noël Coward and Bette Davis, and trained Australian actors such as Judy Nunn, Paula Duncan and Melissa George.