Richard Warren Hacker (October 6, 1947 – April 22, 2020) was an American Major League Baseball player, base coach and scout. Hacker was born in Belleville, Illinois. He played 16 games for the Montreal Expos in the 1971 season as a shortstop. He had a .121 batting average, with four hits in 33 at-bats. Hacker coached the St. Louis Cardinals from 1986 to 1990 and the Toronto Blue Jays from 1991 to 1993.