Caty Louette or Cathy Louët (c. 1713 – d. after 1776) was a signara and businessperson from the African continent.
Caty Louette was the daughter of the Frenchman Nicolas Louët, an official of the French East India Company, and his African signare-mistress Caty de Rufisque of Gorée.
Louette became the signare-consort of the Frenchman Pierre Aussenac de Carcassone, an official of the French East India Company.
Caty Louette has been described as one of the most successful and prominent profiles in the slave trade of Gorée.
In 1756, she commissioned the eldest of the still-standing grand European stone houses which came to be so famous for Gorée in the 18th century.