The Enemies of Reason is a two-part television documentary, written and presented by evolutionary biologist Richard Dawkins, in which he seeks to expose "those areas of belief that exist without scientific proof, yet manage to hold the nation under their spell", including mediumship, acupuncture and psychokinesis.

The documentary was first broadcast on Channel 4 in the UK, styled as a loose successor to Dawkins' documentary of the previous year, The Root of All Evil?, as seen through the incorporation of brief clips from said documentary during the introduction of the first part by Dawkins. The first part aired 13 August 2007 and the second on 20 August 2007.

It includes interviews with Steve Fuller, Deepak Chopra, Satish Kumar, and Derren Brown.