David Mills is an atheist and an author who argues that science and religion cannot be successfully reconciled. Mills' best-known book, Atheist Universe, was among the flagship titles, first appearing in 2004, later dubbed the "new atheism." Mills' book was Amazon.com's best-selling atheist volume from August 2004 through October 2006, when its sales were superseded by The God Delusion by Richard Dawkins. Dawkins cites Mills' writings as "admirable work." Mills claims in his books to rebut both young- and old-earth creation science, as well as Intelligent design.

Mills has been interviewed on multiple talk shows including The Infidel Guy, WBAI in New York, on Air America Radio, and elsewhere. He is also a self-proclaimed member of the Rational Response Squad.

David Mills was born on January 24, 1959 and lives in Huntington, West Virginia.