Robert of Bar (1390 – 25 October 1415) was Lord of Marle between 1397 and 1413, Count of Marle between 1413 and 1415 and Count of Soissons between 1412 and 1415.
He was the only child of Henry of Bar and Marie I de Coucy, Countess of Soissons.
He only renounced his claims after a large financial compensation and the elevation of Marle to a County.
Robert was one of the many French casualties at the Battle of Agincourt.
[2] Robert married in 1409 Jeanne de Béthune, Viscountess of Meaux (d. 1450),[3] daughter of Robert VIII de Béthune, Viscount of Meaux.