Iain Duncan McCalman AO FRHS FASSA FAHA (born 6 November 1947) is an Australian historian, social scientist, academic and former Research Professor at the University of Sydney, as well as a prominent multidisciplinary environmental researcher. McCalman was born and raised in Nyasaland (current-day Malawi) before moving to Australia to complete his university degrees in History. He is a specialist in eighteenth-century and early-nineteenth British and European cultural history.