William McDougall
William McDougall may refer to:
- William McDougall (politician, born 1822), Canadian lawyer and politician from Ontario
- William McDougall (Nova Scotia politician), Canadian shipbuilder and politician from Nova Scotia
- William McDougall (Quebec politician), Canadian lawyer, judge and politician from Quebec
- William McDougall (psychologist), British psychologist and author
- William Currie McDougall Scottish minister and poet, central to the Coatbridge Free Church Scandal
- Bill McDougall, Canadian ice hockey player