Ronald Thomas Locke (born April 4, 1942 in Wakefield, Rhode Island) is a retired American professional baseball player. A left-handed pitcher listed as 5 feet 11 inches (1.80 m) tall and 168 pounds (76 kg), he appeared in 25 games for the New York Mets of Major League Baseball in 1964, working as a starting pitcher in three and as a relief pitcher in the remainder.