| Office: | Member of Parliament for St Germans |
| Term Start: | 17 June 1818 |
| Term End: | 2 June 1826 |
| Party: | Tory |
| Predecessor: | William Henry Pringle |
| Successor: | Charles Ross |
| Honorific Prefix: | Lieutenant Colonel The Honourable |
| Parents: | Henry Bathurst, 3rd Earl Bathurst Georgina Lennox |
| Birth Date: | 27 October 1793 |
| Education: | Eton College |
Seymour Thomas Bathurst (27 October 1793 – 10 April 1834) was an English politician and soldier who served as the Member of Parliament (MP) for St Germans from 1818 to 1826.
Seymour Thomas Bathurst was born in 1793 as the third son[1] of Henry Bathurst, 3rd Earl Bathurst and Georgina Lennox, daughter of Lord George Lennox and a descendant of King Charles II.[2] He was educated at Eton College from 1808 to 1811.
Bathurst became an Ensign in 1814 in the Grenadier Guards,[3] and Captain in 1821, before he became a Major in 1823 and then a Lieutenant Colonel in 1825. He was the inspecting field officer of militia, Ionian Isles from 1825 to 1828. He fought at the battle of Waterloo in 1815.[4]
Bathurst was elected to Parliament at the 1818 general election for the constituency of St Germans. He was reelected at the 1820 general election, before he retired at the 1826 general election.
Bathurst married Julia Hankey, the daughter of John Peter Hankey[5] and niece of Chief Secretary Sir Frederick Hankey on 6 October 1829. They had two children, Allen and Mary. Neither of his elder brothers married, which meant his son Allen acceded to the Earldom in 1878.
Bathurst died on 10 April 1834.