Donald George Marion (July 31, 1889 – January 18, 1933) was a pitcher in Major League Baseball in 1914 and 1915.
Dan Marion
| Given name: | Donald George Marion |
| Nicknames: | Rube |
| Primary Pos: | Pitcher |
| Hght/Wght: | 6'1" / 187 lbs |
| Bats/Throws: | R / R |
| Born: | Jul 31, 1889 in Bowling Green, OH |
| Died: | Jan 18, 1933 in Milwaukee, WI (43 years old) |
| Debut: | Apr 23, 1914 |