Judith Hann (born 8 September 1942) at Littleover, Derby, Derbyshire, England, is a broadcaster and writer specialising in science, food and the environment. She is the daughter of former Derby County footballer and trainer Ralph Hann.
Hann was educated at the state girls' school Parkfield Cedars Grammar School in Derby, followed by the University of Durham in Durham, from which she graduated with a BSc degree in Zoology.
Hann presented BBC's Tomorrow's World between 1974 and 1994. She has since made television guest appearances, 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.
Judith Hann lives on a farm near the small town of Lechlade, Gloucestershire, in the Cotswolds. She is married to John Exelby, a former executive at BBC News, and has two sons Jake and Daniel Exelby. She is passionate about herbs and has a very large garden.