William James Riley
- Bats Right, Throws Right
- Height 5' 10", Weight 160 lb.
David Nemec's The Beer and Whisky League has a photo of the 1879 Indianapolis Hoosiers, in which Riley is included. Nemec says that Riley was an early American Association umpire, and that he got the nickname because he looked somewhat Asian. He umpired 8 games in the National League in 1880 and 10 games in the American Association in 1882 and 1885.