The ensemble Ars nova (founded 1963) is a French contemporary music instrumental chamber ensemble. It was founded by Marius Constant. The current director is (b. 1946). The ensemble works with composers such as Pascal Dusapin, , , Georges Aperghis, Claude Barthélemy, Luc Ferrari, Jean-Pierre Drouet, Alexandros Markeas and Nguyen-Thien Dao. The ensemble is supported by the Ministère de la Culture et de la Communication (DRAC Poitou-Charentes, DRAC Nord-Pas de Calais), Poitou-Charentes Nord-Pas de Calais, the town of Poitiers and SACEM.