Prince Louis of Luxembourg (in full, His Highness Prince Louis-Xavier-Marie-Guillaume of Luxembourg), is the third son of Grand Duke Henri of Luxembourg and Grand Duchess Maria Teresa, born August 3, 1986. He is a Prince of Luxembourg and a Prince of Nassau.

He has two elder siblings: Guillaume, Hereditary Grand Duke of Luxembourg and Prince Félix of Luxembourg; and two younger siblings: Princess Alexandra (born February 16, 1991) and Prince Sébastien (born April 16, 1992).

His education includes primary and secondary school in Luxembourg; and Beau Soleil boarding school, Villars-sur-Ollon, Switzerland.