Jean IV de Châteauvillain

Jean IV de Châteauvillain (born after 1326 – 19 September 1356) was the eldest son of Jean III de Châteauvillain and Marguerite de Noyers. He succeeded his father as lord of Châteauvillain, Arc-en-Barrois and Nully in 1355.

Called to the Hundred Years' War, he fought in the royal army at Poitiers and was killed there on 19 September 1356. He was the last male of his line, so his lordships were split between his two sisters.