John Warham MNZM (11 October 1919 – 12 May 2010) was an Australian and New Zealand photographer and ornithologist notable for his research on seabirds, especially petrels. Warham was born in Halifax, Yorkshire, in England, and educated at King Edward VI Grammar School at Retford, Nottinghamshire. From 1940 he served in the British Army during the Second World War in Europe, being demobilised in 1946. He moved to Australia from England in 1953. Following much photography and study of Australian birds, and the publication of illustrated papers on their biology in the Emu, he returned to England to take a doctorate at the University of Durham.