Bruce Eugene Kison was an American professional baseball pitcher, who played in Major League Baseball (MLB) for the Pittsburgh Pirates (1971–79), California Angels (1980–84) and Boston Red Sox (1985). Kison won two World Series championships with the Pirates, both over the Baltimore Orioles, and is perhaps best remembered for throwing 6+1⁄3 scoreless innings of relief to win Game 4 of the 1971 World Series. He batted and threw right-handed.

The 1971 World Series was the championship round of Major League Baseball's (MLB) 1971 season and featured the first night game in its history. The 68th edition of the Fall Classic was a best-of-seven playoff between the defending World Series and American League (AL) champion Baltimore Orioles and the National League (NL) champion Pittsburgh Pirates. The Pirates won the World Series in seven games, in large part because of superstar right fielder Roberto Clemente, whose all-around brilliance was on full display on a national stage. Game 4 in Pittsburgh was the first World Series game played at night.