Edward M. Mars (December 4, 1866 – December 9, 1941) was an American Major League Baseball player. He was a starting pitcher for the Syracuse Stars of the American Association for the last two months of the 1890 season. Mars led the 55–72 Stars in winning percentage (.643) with a 9–5 record. That achievement was also for fourth-best in the entire league. He had a rather high earned run average of 4.67 but an average run support. In his 14 starts the Stars scored 111 runs, an average of almost 8 runs per game. By contrast, they averaged just 5.2 runs in the 113 games that he didn't start.