Peter Michael Mayer (March 28, 1936 – May 11, 2018) was a British-born American independent publisher who was president of The Overlook Press/Peter Mayer Publishers, Inc., a Woodstock, New York-based publishing company he founded with his father in 1971. At the time of Overlook’s founding, Mayer was head of Avon Books, a large New York-based paperback publisher. From 1978 to 1996, Mayer was CEO of Penguin Books, where he introduced a flexible style in editorial, marketing, and production. During his tenure, he was credited with reviving the company into "the most formidable and admired publisher in the English language". Recently, Mayer financially revived both Ardis, a publisher of Russian literature in English, and Duckworth, an independent publishing house in the UK.