Eugene Daniel Stone (January 16, 1944 – March 1, 2009) was an American professional baseball player. Born in Burbank, California, he was a first baseman who appeared in 18 games in Major League Baseball for the Philadelphia Phillies in 1969. He threw and batted left-handed and was listed as 5 feet 11 inches (1.80 m) tall and 190 pounds (86 kg). He attended Citrus College. Stone died in Colorado Springs at the age of 65.