Marie Anne Thérèse Ombline Desbassayns (3 July 1755 – 4 February 1846) was a French planter and slave trader on the French island of La Réunion. She was one of the greatest slave planters of the island after she was widowed in 1800 and until death, and played a significant role in the economy and slave industry of the colony. She became an important figure in the local folklore, and one of the most well-known figures of the history of the island.