Sir Roger Mostyn, 3rd Baronet, of Mostyn Hall, Holywell, Flintshire, was a Welsh Tory politician who sat in the English and British House of Commons for 25 years from 1701 to 1735.
- Occupation
- politician
- Position held
- Member of Parliament in the Parliament of England, member of the 1st Parliament of Great Britain, member of the 2nd Parliament of Great Britain, member of the 3rd Parliament of Great Britain
- Born
- July 31, 1673
- Died
- May 5, 1739
