Louis of Nassau, Lord of De Lek and Beverweerd (1602 – The Hague, 28 February 1665) was a Dutch soldier. He was the illegitimate son of Margaretha van Mechelen and Maurice, Prince of Orange, and so a collateral member of the House of Orange-Nassau. He was a Lord of the heerlijkheid van De Lek (which he inherited on the death of his older brother, William of Nassau on his death in 1627), as well as the Beverweerd Castle and its heerlijkheid from his father.[1]