Thomas Henry Connolly (December 31, 1870 – April 28, 1961) was an English-American umpire in Major League Baseball. He officiated in the National League from 1898 to 1900, followed by 31 years of service in the American League from 1901 to 1931. In over half a century as an American League umpire and supervisor, he established the high standards for which the circuit's arbiters became known, and solidified the reputation for integrity of umpires in the major leagues.