Robert de Melun (died 1585), viscount of Ghent and marquis of Roubaix, was a nobleman from the Low Countries who fought in the Eighty Years' War.
[1] Mathieu Moulart, abbot of Saint-Ghislain, mediated a reconciliation between Melun and his victim's father, Peter Ernst I von Mansfeld-Vorderort.
In 1578 Melun pressed the States General to reconcile with the king, and in 1579 he was among the signatories of the Treaty of Arras, by which Artois recognised the sovereignty of Philip II.
On 10 May 1580 Melun accepted the surrender of François de la Noue, a Huguenot commander who had become a mercenary in Dutch service, and delivered him to the Prince of Parma in Mons with great shows of civility and regard.
He was also made Marquis of Roubaix, held a commission as a cavalry commander in the Army of Flanders, and was named a knight of the Golden Fleece.