Sir Henry St John Carew St John-Mildmay, 4th Baronet, of Dogmersfield Park, Hampshire, was an English politician.
- Occupation
- politician
- Position held
- member of the 4th Parliament of the United Kingdom, member of the 5th Parliament of the United Kingdom
- Citizenship
- United Kingdom of Great Britain and Ireland, Kingdom of Great Britain
- Born
- April 15, 1787
- Died
- January 17, 1848