Climbing Mount Improbable is a 1996 popular science book by Richard Dawkins. The book’s central metaphor describes complex adaptations, which evolve gradually through a series of intermediates. This happens through the cumulative, nonrandom process of natural selection.

The book grew out of Dawkins’s Royal Institution Christmas Lectures, Growing Up in the Universe and shares its title with the third lecture. It was illustrated by Lalla Ward. Dawkins dedicated it to Robert Winston, “a good doctor and a good man.”