Geoffrey Hinsliff (born 1937 in Leeds, West Riding of Yorkshire) is an English actor best known for his portrayal of Don Brennan in Coronation Street from 1987 to 1997. He had previously played other characters in the same programme, in 1963 and 1977.
He originally trained at RADA, before making his television debut in an episode of Z-Cars. He went on to appear in Adam Adamant Lives!, Dixon of Dock Green, UFO, Crown Court, The Professionals and Heartbeat, and also played a wireless operator in the film A Bridge Too Far. He also had a role in the comedy-drama Brass and appeared in two Doctor Who stories: Image of the Fendahl and Nightmare of Eden. He guest-starred in Holby City as an alcoholic in 2010.
His daughter is the political journalist Gaby Hinsliff.