Eugene Maximillian, Prince of Hornes (October 1, 1631 – March 10, 1709) was the son of Ambrosius, Count of Hornes and Marie Marguerite de Bailleul de Lesdaing. He was made a Prince of the Empire on October 19, 1677, and his domain elevated to the Principality of Hornes. It was an enclave of Liege. He was married to Princess Anne Marie Jeanne of Croÿ and had one son, Philippe Emanuel, Prince of Hornes. He died 14 October 1718.