William John Dundas, FRSE, LLD, WS (1849–1921) was a Scottish lawyer and mathematician. In later life he was a director of the Royal Bank of Scotland. He was the younger brother of James Dundas VC.
- Occupation
- mathematician
- Citizenship
- United Kingdom of Great Britain and Ireland
- Born
- March 16, 1849
- Died
- July 9, 1921