Adrien Charles Joseph Robert de Wendel d'Hayange (9 May 1847 – 27 August 1903), often known as Robert de Wendel, was a French steelmaker, heir of a long line of Lorraine industrialists. He and his brother Henri ran several large steelworks in Lorraine.From 1898 until his accidental death in 1903 he was president of the Comité des forges, the French steelmakers' association.