Mathieu Léveillé (c. 1709 – 9 September 1743) was a slave born on Martinique, bought by the French Government and brought to Quebec to work as executioner.

Léveillé quickly started suffering from the rigid weather conditions of North America, and he became weaker and depressed. To improve his health, the French provided him with a wife, a young slave from the West Indies called Angélique-Denise.

In 1744, the Assassins John de la Tour and Achilles Davenport looked for Léveillé, due to his alleged knowledge of the First Civilization, but discovered he had been dead for a year.