Dewey is a surname. Notable people with the surname include:
A. Peter Dewey (1916–1945), American soldierCharles Almon Dewey (1877–1958), American judgeCharles Melville Dewey (1849–1937), American painterCharles S. Dewey (1880–1980), American politicianChester Dewey (1784–1867), American scientistC. Ernest Dewey (1861-1945), American politicianDavis Dewey (1858–1942), American economistEdward H. Dewey (1837–1904), American doctorEdward R. Dewey (1895–1978), American economistGeorge Dewey (1837–1917), American admiralHeather Dewey-Hagborg (born 1982), American artist and educatorJames Dewey, MP for Dorset 1656, and Wareham 1659John Dewey (1859–1952), American philosopher and educatorJohn Frederick Dewey (born 1937), British geologistJohn J. Dewey (died 1891), American territorial legislator and physicianLyster Dewey (1865–1944), American botanistMatthew Dewey (born 1984), Australian composerMelvil Dewey (1851–1931), American librarianNicholas Dewey, Australian poetNelson Dewey (1813–1889), American politicianOrville Dewey (1794–1882), American clergymanRob Dewey (born 1983), Scottish rugby playerSheila Dewey, British playwrightThomas B. Dewey (1915–1981), American authorThomas E. Dewey (1902–1971), American 47th Governor of New YorkTravis Dewey aka "Fingar Pickingood", American musician and entertainerFictional characters:
Billy Dewey, fictional character in the television series SouthlandMs. Dewey, fictional character in a viral marketing campaign for Microsoft Live SearchDewey, Cheatem & Howe, fictional law firm