Barbara Ewing (born 1944) is a UK-based actress, playwright and novelist. Born in New Zealand, she graduated from Victoria University of Wellington with a BA in English and Maori before coming to Britain in 1965 to train as an actress at RADA (the Royal Academy of Dramatic Art) in London.
She made her film debut in the horror film Torture Garden (1967) for Amicus Productions, followed by Dracula Has Risen from the Grave (1968) with Christopher Lee for Hammer Films. Both movies were directed by Freddie Francis. Her other films included The Reckoning (1969), Eye of the Needle (1981), Haunters of the Deep (1984) and When the Whales Came (1989).
The television role for which she is best known is that of Bradley Hardacre's mistress Agnes Fairchild in the Granada Television comedy series Brass, alongside Timothy West (1982–84). In 1986, she played Treen Dudgeon in the short-lived BBC series Comrade Dad, alongside George Cole and Doris Hare. In 1978 she had appeared in an episode of Euston Films' The Sweeney (S4-E7 'Bait').
Her 1989 one-woman show, Alexandra Kollontai, about the only woman in Lenin's cabinet in 1917 was a great hit in London, and at the Edinburgh and Sydney Festivals.