William Henry McWilliams
- Bats Right, Throws Right
- Height 6' 0", Weight 185 lb.
- School University of Iowa
- High School DePaul Academy
- Debut July 8, 1931
- Final Game July 11, 1931
- Born November 28, 1910 in Dubuque, IA USA
- Died January 21, 1997 in Garland, TX USA
The only other major leaguer (through 2008) with the last name McWilliams is Larry McWilliams.
Although Bill never again came to the majors after 1931, he played in the minors through 1941, several times hitting over .300 and managing for a while in 1941.