Stephen Edward Dillon (born March 20, 1943) is an American former professional baseball player. He was a left-handed pitcher whose professional career lasted for four seasons (1962–1965), including major league stints with the 1963 and 1964 New York Mets. While Dillon appeared in only three major league games during his career, all in relief, he pitched in the first-ever night game played at Shea Stadium on May 6, 1964.