List of Famous people who are 91

Henri Pujol is a French professor at University of Montpellier 1 and former president of the French ligue against cancer from 1998 to 2007.

John Simmons Barth is an American writer who is best known for his postmodernist and metafictional fiction.

Jean Bobet is a French former road bicycle racer. He is the younger brother of Louison Bobet. Less talented, he nevertheless won the world students' championship as an amateur and then, as a professional, Paris–Nice in 1955, Genoa–Nice in 1956 and the Circuit du Morbihan in 1953. He came third in Milan–San Remo in 1953. He rode from 1949 to 1959, including all three Grand Tours.

Gérard Poirier was a Canadian actor and director.

Michael Darwin Morley was an American mathematician. At his death in 2020, Morley was professor emeritus at Cornell University. His research was in mathematical logic and model theory, and he is best known for Morley's categoricity theorem, which he proved in his PhD thesis Categoricity in Power in 1962.

Gary Snyder is an American man of letters. Perhaps best known as a poet, he is also an essayist, lecturer, and environmental activist with anarchoprimitivist leanings. He has been described as the "poet laureate of Deep Ecology". Snyder is a winner of a Pulitzer Prize for Poetry and the American Book Award. His work, in his various roles, reflects an immersion in both Buddhist spirituality and nature. He has translated literature into English from ancient Chinese and modern Japanese. For many years, Snyder was an academic at the University of California, Davis and for a time served as a member of the California Arts Council.