Leaman is a surname. Notable people with the surname include:
Chris Leaman (born 1980), British Liberal Democrat politician
Clifford Leaman, American classical saxophonist, Professor of Saxophone at the University of South Carolina
David Leaman, Tasmanian author, structural geologist, geohydrologist and geophysicist
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
Oliver Leaman, Professor of Philosophy and Zantker Professor of Judaic Studies