William Neilson

• William Neilson, Lord Provost of Edinburgh 1717 to 1719
• William Neilson , Canadian businessman
• William Neilson , physician and politician in Manitoba, Canada
• Willie Neilson, Scottish rugby player
• William Allan Neilson, Scottish-American educator
• William Neilson , English-born New Zealand cricketer
• William George Neilson, Canadian politician in the Legislative Assembly of British Columbia
• Bill Neilson, Premier of Tasmania