Dewey is a masculine given name. Notable people with the name include:
Dewey Balfa (1927–1992), American musicianDewey Bartlett (1919–1979), American politicianDewey Bunnell (born 1951), American musicianDewey E. Burchett, Jr. (1939-2009), American judgeDewey Cooper (born 1974), American kickboxer and boxerDewey Lambdin (born 1945), American novelistDewey McClain, American football player and politicianDewey Martin (actor) (born 1923), American actorDewey Martin (musician) (1940–2009), Canadian drummerDewey Nicks (born 1961), American photographerDewey Redman (1931–2006), American jazz saxophonistDewey Robinson (1898–1950), American actorDewey Short (1898–1979), American politicianDewey Smith (1972–2009), American aquanautDewey Weber (1938–1993), American surferFictional characters:
Dewey Cox, fictional character in the 2007 film Walk Hard: The Dewey Cox StoryDewey Denouement, fictional character in the A Series of Unfortunate Events novels by Lemony SnicketDewey Finn, fictional character in the 2003 film School of RockDewey Novak, fictional character in the television series Eureka SevenDewey Riley, fictional character in the Scream filmsDewey (Malcolm in the Middle), fictional character in the television series Malcolm in the MiddleHuey, Dewey and Louie, fictional nephews of Donald Duck