Judith Hann (born 8 September 1942) at Littleover, Derby, Derbyshire, England, is a freelance broadcaster and writer specialising in science, food and the environment. She is the daughter of former Derby County footballer and trainer Ralph Hann.
Hann presented BBC's Tomorrow's World between 1974 and 1994. She has since made guest appearances on various TV shows, and has done some TV commercials. In 1997 she appeared in a Shredded Wheat advertisement in which she used her scientific judgement to inform viewers that the product could possibly help keep their hearts healthy. In 2006 she presented a series on BBC Radio 4, Two's A Crowd which searched for the secrets of human identity. She runs her own media training and presentation skills company with her husband John Exelby.