Art Sullivan (born Marc Liénart van Lidth de Jeude; 22 November 1950) is a Belgian singer. He was successful in many countries, including Belgium, France, Portugal and Germany. Art Sullivan has sold ten million records between 1972 and 1978. Compilations of his hits are still released.
The noble hous of lidth is living in Belgium and the Netherlands. The parents of Art sullivan are Marie-José d'Udekem d'Acoz and Josse Liénart van Lidth de Jeude. His mother, daughter of Baron Guy d'Udekem is a relative of Mathilde d'Udekem d'Acoz, they have little contact.