William F. Nelson (September 28, 1863 – June 23, 1941) was a starting pitcher in Major League Baseball who played for the Pittsburgh Alleghenys of the American Association.
Nelson threw right-handed; his batting side is unknown.
He posted a 4.50 ERA in three complete games and did not have a decision, giving up 13 earned runs on 26 hits and eight walks while striking out six in 26 innings of work.
Nelson died in his native Terre Haute at age 77.
This biographical article relating to an American baseball pitcher born in the 1860s is a stub.