Thomas Clarkson (1760–1846) was an English abolitionist.
Thomas Clarkson may also refer to:
Tom Clarkson (rugby league), English rugby league footballer of the 1910s, 1920s and 1930s Tom Clarkson (rugby union) (born 2000), Irish rugby union player of the 2020s Thomas Clarkson (Upper Canada) (1800s–1874), Canadian businessman and founder of Clarkson Gordon Thomas S. Clarkson (1837–1894), American businessman and philanthropist Thomas W. Clarkson, heavy metals toxicologist Thomas Clarkson (footballer) (1865–1915), English footballer T. Henry Clarkson, American golfer and billiards player Tom Clarkson (Waterloo Road), a character in the TV series Waterloo Road