Sir David John Spiegelhalter (born 16 August 1953) is a British statistician and a Fellow of Churchill College, Cambridge.

Between 2007 and 2012 he divided his work[16] between the Cambridge Statistical Laboratory (three-fifths) and the Medical Research Council Biostatistics Unit (two-fifths).

[17] He left the MRC in March 2012[18] and worked full-time at the Statistical Laboratory as the Winton Professor of the Public Understanding of Risk until his retirement.

[13][19] In 2012, Spiegelhalter hosted the BBC Four documentary Tails You Win: The Science of Chance which described the application of probability in everyday life.

[22] In March 2020 Spiegelhalter launched a podcast called Risky Talk where he interviews experts in risk and evidence communication on topics like genetics, nutrition, climate change and immigration.