Curtis Hooper Fullerton was an American professional baseball pitcher with the Boston Red Sox of Major League Baseball. Fullerton played for the Red Sox from 1921 to 1925 and again in 1933. He was signed by the New York Yankees in 1925, but never played for the club. Instead, he was released to the Hollywood Stars in the Pacific Coast League where he played from 1926 to 1928. Following that, he played two seasons with the Portland Beavers from 1929 to 1930. He was traded to the Jersey City Skeeters in 1931. In 1933, he was re-signed to the Red Sox only to be released again in 1934 to Kansas City. He pitched in the Texas League for the Dallas Steers from 1936 to 1937. In 1938, he pitched his last stint in organized baseball for the Monroe White Sox in the Class C Cotton States League.