Robert Ransom Rush (December 21, 1925 – March 19, 2011) was an American professional baseball pitcher who appeared in 417 games in Major League Baseball from 1948 to 1960 for the Chicago Cubs, Milwaukee Braves and Chicago White Sox. He threw and batted right-handed, stood 6 feet 4 inches (1.93 m) tall and weighed 205 pounds (93 kg). Rush was a National League All-Star selection in 1950 and 1952. Although he was a starting pitcher for the Cubs for ten seasons, and worked in 339 total games for them, he did not reach the postseason until he was a Milwaukee Brave, when he appeared in the 1958 World Series.