William Neill
William Neill may refer to:
- William Neill , Scottish poet
- William Neill , Australian rugby league footballer of the early 20th century
- William Neill, birth name of Bud Neill, Scottish cartoonist of the mid 20th century
- William Neill , MP for Belfast North
- Bill Neill, American football defensive lineman
- Billy Neill, Irish footballer
- Bill Neil, American visual effects artist
- William Neill , Archdeacon of Dromore