Thomas Erskine, 9th Earl of Kellie (about 1746 – 6 February 1828) was a Scottish merchant, landowner and politician who for many years lived in the Swedish port city of Gothenburg. He returned to Scotland in 1799 when he inherited an earldom from his nephew Charles Erskine, 8th Earl Kellie, and thus, became the 9th Earl of Kellie.