Sir Josiah John Guest, 1st Baronet, known as John Josiah Guest, was a British engineer, entrepreneur and politician.
- Occupation
- politician
- Position held
- member of the 16th Parliament of the United Kingdom, member of the 15th Parliament of the United Kingdom, member of the 14th Parliament of the United Kingdom, member of the 13th Parliament of the United Kingdom
- Citizenship
- United Kingdom of Great Britain and Ireland, Wales, Kingdom of Great Britain
- Born
- February 2, 1785
- Died
- November 26, 1852