Thomas Joseph Loftus (November 15, 1856 – April 16, 1910) was a manager in the American Association, the National League, and the American League. His playing career began in 1877 with the St. Louis Brown Stockings of the National League, but he only played in nine career games in 1877 and 1883 as an outfielder. His first managerial job came in 1884 with the Milwaukee Brewers of the short-lived Union Association (it only lasted one year), in which he only managed 12 games (going 8–4). Loftus died in Dubuque, Iowa at the age of 53.