J. Cecil Maby

Joseph Cecil Maby, B.Sc., ARCS, FRAS, (1902-1971) was a British biophysicist, dowser and psychical researcher.

Maby was born in the Colony of Natal and moved to England as a child. He lived near Cheltenham. He believed that he had experienced paranormal events at his family's home. He developed a lifelong interest in psychical research.

With physicist T. Bedford Franklin, Maby wrote the book The Physics of the Dowsing Rod (1939). They postulated that dowsing occurred due to some form of radiation. A review in Nature noted that there is "no direct evidence for such waves and the author's discussion of their polarization cannot be justified on our present physical knowledge." Psychologist Donovan Rawcliffe wrote that claims in the book have no scientific validity.

Maby was a Fellow of the Royal Astronomical Society. He was a member of the British Society of Dowsers and Society for Psychical Research.