Undeniable: Evolution and the Science of Creation is a 2014 book written by Bill Nye. It was co-written and edited by Corey S. Powell and discusses advances in science in support of evolution. The book is Nye's extension of the Bill Nye–Ken Ham debate that took place in 2014.

William Sanford Nye is an American mechanical engineer, science communicator, and television presenter. He is best known as the host of the science education television show Bill Nye the Science Guy (1993–1999) and as a science educator in pop culture. Born in Washington, D.C., Nye began his career as a mechanical engineer for Boeing in Seattle, where he invented a hydraulic resonance suppressor tube used on 747 airplanes. In 1986, he left Boeing to pursue comedy—writing and performing for the local sketch television show Almost Live!, where he regularly conducted wacky scientific experiments.