Thomas Thynne, 2nd Marquess of Bath (25 January 1765 – 27 March 1837), styled Viscount Weymouth from 1789 until 1796, was a British peer.

He was Lord Lieutenant of Somerset between 1819 and 1837 and was invested as a Knight of the Garter on 16 July 1823.

"I have been told that at a certain hour in the morning he would admit the humblest persons in his parish, listen to their little concerns, and advise them.....He was one of the few who well understood for what purposes rank, wealth, and influence, are conferred.

"[2] Lord Bath died in 1837, aged 72, and was buried at his home, Longleat House.

"I was told ten thousand were present, one hundred and fifty horsemen.