Thomas Clarkson (March 28, 1760 – September 26, 1846) was a prominent English abolitionist and social reformer. He dedicated his life to ending the slave trade and slavery, becoming a central figure in the British abolition movement. Through extensive investigations, writings, and speeches, Clarkson exposed the brutal realities of the slave trade, contributing significantly to the passage of the Slave Trade Act of 1807 and the Slavery Abolition Act of 1833. His work had a profound impact on global abolitionist efforts.