Geoffrey Lehmann (born 28 June 1940) is an Australian poet, children's writer, and tax lawyer. Lehmann grew up in McMahon's Point, Sydney, and attended the Shore School in North Sydney. He graduated in arts and law from the University of Sydney in 1960 and 1963 respectively. In 1961, he demonstrated in a student newspaper article that fellow student Robert Hughes had published plagiarised poetry by Terence Tiller and others, and a drawing by Leonard Baskin.