John Alexander Thynne, 4th Marquess of Bath, styled Viscount Weymouth between March and June 1837, was a British peer and landowner, and a diplomat for almost sixty years.
- Occupation
- diplomat, politician
- Position held
- member of the House of Lords, Lord Lieutenant of Wiltshire
- Citizenship
- United Kingdom of Great Britain and Ireland
- Born
- March 1, 1831
- Died
- April 20, 1896
