Marc Liénart van Lidth de Jeude (22 November 1950 – 27 December 2019), known professionally as Art Sullivan, was a Belgian singer. He was successful in many countries, including Belgium, France, Portugal and Germany.

Art Sullivan sold ten million records between 1972 and 1978. Compilations of his hits are still released. He died from pancreatic cancer on 27 December 2019.