Sir James Johnstone, 3rd Baronet was a Scottish baronet and politician. He sat in the House of Commons of Great Britain from 1743 to 1754.
- Occupation
- politician
- Position held
- member of the 9th Parliament of Great Britain, member of the 10th Parliament of Great Britain
- Born
- February 9, 1697
- Died
- December 10, 1772