Ronald Reece Slocum (July 2, 1945 — August 25, 1988) was an American professional baseball player. Slocum appeared in 80 games for the San Diego Padres of Major League Baseball during that team's first three seasons of existence, including the entire 1970 season. A catcher and third baseman when he entered professional baseball, he was a utility infielder and backup catcher for San Diego, playing a near-equal number of games at third base, catcher, shortstop and second base. He threw and batted right-handed, stood 6 feet 2 inches (1.88 m) tall and weighed 180 pounds (82 kg).