William Edward Donovan (October 13, 1876 – December 9, 1923), nicknamed "Wild Bill" and "Smiling Bill", was an American right-handed baseball pitcher and manager. Donovan played Major League Baseball for the Washington Senators (1898), Brooklyn Superbas (1899–1902), and Detroit Tigers (1903–1912). In 1901, he led the National League with 25 wins. He later helped Detroit win three consecutive American League pennants from 1907 to 1909. In 1907, he compiled a 25–4 record with a 2.12 earned run average (ERA). In 18 major league seasons, Donovan appeared in 378 games as a pitcher and compiled a 186–139 win–loss record with 289 complete games and a 2.69 ERA in 2,964+2⁄3 innings pitched.