John Donahue

John or Jack Donahue may refer to:
 * John Donahue (baseball) (1894–1949), Major League Baseball right fielder
 * Jiggs Donahue (John Augustine Donahue, 1879–1913), Major League Baseball first baseman and catcher
 * Deacon Donahue (John Stephen Michael Donahue, 1920–2008), Major League Baseball relief pitcher
 * John F. Donahue (died 2017), chairman of Federated Investors
 * Jack Donahue (1806–1830), Australian bushranger
 * Jack Donahue (American football) (1904–1984), American football player and coach
 * Jack Donahue (politician) (born 1944), Louisiana state senator from St. Tammany Parish