Sir Thomas Morgan (8 June 1727 – 15 May 1771) was a Welsh politician, of the family of Morgan of Tredegar. He was the eldest son of Sir Thomas Morgan and his wife Jane Colchester.
Morgan represented Brecon in the House of Commons from 1754 until 1763. That year, he accepted the Stewardship of the Manor of Old Shoreham to succeed his late cousin, Sir William Morgan in Monmouthshire, which he represented from 1763 until his death in 1771. He was briefly Lord Lieutenant of Brecknockshire and Monmouthshire in succession to his father, who died in 1769. Morgan died unmarried, and left his estates to his younger brother Sir Charles Morgan.