John of Bar (1380 – 25 October 1415, Agincourt) was lord of Puisaye. He was the son of Robert I of Bar and Marie de France. He was killed at the battle of Agincourt alongside his brother Edward III and his nephew Robert.
Sources Georges Poull, La Maison souveraine et ducale de Bar, 1994 Barbara Tuchman, A Distant Mirror, 1978, Alfred A. Knopf, New York