Sir William Lowther, 3rd Baronet was an English landowner, of Marske Hall, Yorkshire and Holker Hall. He was the eldest son of Sir Thomas Lowther, 2nd Baronet and Lady Elizabeth Cavendish.
- Occupation
- politician
- Position held
- member of the 11th Parliament of Great Britain, Lord Lieutenant of Westmorland
- Citizenship
- Kingdom of Great Britain
- Born
- 1727
- Died
- April 15, 1756