Bill Chalker, born in Grafton, New South Wales (NSW), Australia, was educated at the University of New England, graduating with a Honours Science Degree (B.Sc. Hons.) with majors in Chemistry and Mathematics.Since 1975 he has worked in the food industry as an industrial chemist, laboratory manager and quality manager.
Bill Chalker is one of Australia's leading UFO researchers and has written extensively on the subject. He is a contributing editor for the International UFO Reporter and coordinates the NSW UFO INVESTIGATION CENTRE (UFOIC).He was the Australian representative for the Aerial Phenomena Research Organisation (APRO) from 1978 to 1986 and NSW state representative for the Mutual UFO Network (MUFON) from 1976 to 1993. In 1996 Bill Chalker's book on the Australia UFO experience, "The OZ Files: the Australian UFO story", was published in Australia by Duffy & Snellgrove.