Leaman is a surname. Notable people with the surname include:
Clifford Leaman, American classical saxophonist; professor of Saxophone at the University of South Carolina David Leaman, Tasmanian author, structural geologist, geo-hydrologist and geophysicist Graham Leaman (1920–1985), featured in five Doctor Who serials Jack Leaman (1932–2004), head coach of the University of Massachusetts men's basketball team from 1966 Louisa Leaman (born 1976), writer and behaviour expert based in London, UK Nate Leaman (born 1972), American ice hockey coach Oliver Leaman, Professor of Philosophy and Zantker; professor of Judaic Studies Richard Leaman (born 1956), British charity executive and former senior Royal Navy officer