William George McCloskey
- Bats Unknown, Throws Unknown
- Height 5' 8", Weight 155 lb.
- Debut May 25, 1875
- Final Game September 9, 1884
- Born May, 1852 in Pennsylvania USA
- Died July 9, 1924 in Westville, NJ USA
Bill McCloskey worked as a cigar maker in Philadelphia, PA after his playing career. He was the same man who played for the Washington Nationals in 1875 and whose record was simply attributed to McCloskey until confirmation of the two men's shared identity was found in 2016.