James Raymond Greengrass (October 24, 1927 – September 9, 2019) was an American professional baseball player. A power-hitting outfielder whose career was hindered by phlebitis, Greengrass appeared in 504 games over five seasons (1952–56) in Major League Baseball (MLB) for the Cincinnati Reds / Redlegs and Philadelphia Phillies. He threw and batted right-handed and was listed as 6 feet 1 inch (1.85 m) tall and 200 pounds (91 kg).