William Joseph Moriarty (August 1883 – December 25, 1916) was a Major League Baseball player. He played shortstop in six games for the 1909 Cincinnati Reds. His brother, George Moriarty was also a professional baseball player.
Bill Moriarty
| Given name: | William Joseph Moriarty |
| Nicknames: | None |
| Primary Pos: | Shortstop |
| Hght/Wght: | 6'2" / 180 lbs |
| Bats/Throws: | R / R |
| Born: | Aug 24, 1883 in Chicago, IL |
| Died: | Dec 25, 1916 in Elgin, IL (33 years old) |
| Debut: | Apr 29, 1909 |