Sir John Molesworth, 4th Baronet (1705–1766) of Pencarrow, Cornwall, was a British landowner and Tory politician who sat in the House of Commons between 1734 and 1761.
- Occupation
- politician, plantation owner
- Position held
- member of the 8th Parliament of Great Britain, member of the 9th Parliament of Great Britain, member of the 10th Parliament of Great Britain, member of the 11th Parliament of Great Britain
- Citizenship
- Kingdom of Great Britain
- Born
- 1705, February 28, 1705
- Died
