William McKay (disambiguation)
William McKay was a Canadian soldier and administrator.
William or Bill McKay may also refer to:
- William McKay, Scottish footballer
- William McKay , British government administrator, Clerk of the House of Commons
- William McKay , Canadian Senator representing Nova Scotia
- Bill McKay , Scottish association footballer
- Bill McKay , Australian rules footballer
- Bill McKay , Irish rugby union player
- Billy Mckay, Northern Irish footballer
- William Cameron McKay, U.S. Army officer, scout, physician and surgeon
- Bill McKay, fictional politician played by Robert Redford in The Candidate