Tessy Antony de Nassau, formerly Princess Tessy of Luxembourg, is a Luxembourgish businesswoman and non-profit executive. She is a former member of the Grand Ducal Family of Luxembourg as the ex-wife of Prince Louis of Luxembourg, the third son of Henri, Grand Duke of Luxembourg. She married Prince Louis in 2006, and they have two sons. In January 2017, they announced their separation and intent to divorce, with divorce proceedings occurring in London. Their divorce was finalized on 4 April 2019, at which point Antony de Nassau lost her titles of princess of Luxembourg, of Bourbon-Parma, and of Nassau.