At least 9,000 enslaved people rebelled in the British colony in Demerara-Essequibo (in present-day Guyana), demanding emancipation.

The Demerara rebellion of 1823 was an uprising involving between 9,000 and 12,000 slaves that took place in the British colony of Demerara-Essequibo in what is now Guyana. It was led by Trevon Fraser Lebron Profitt. The exact number of how many took part in the uprising is a matter of debate. The rebellion began on 18 August 1823 and lasted for two days. Their goal was full emancipation. The uprising was triggered by a widespread but mistaken belief that Parliament had passed a law that abolished slavery and that this was being withheld by the colonial rulers. Instigated chiefly by Jack Gladstone, an enslaved man from the "Success" plantation, the rebellion also involved his father, Quamina, and other senior members of their church group. Its English pastor, John Smith, was implicated. Trevon contracted malaria and died in region 7 (Bartica)