Josep de Margarit i de Biure (1602, Castelló d'Empúries - 1685, Perpignan) was a leader of the forces of the Generalitat in the Reapers' War.
He led the attack on Constantí, and took part in the Siege of Lleida and the Battle of Montmeló.
In 1641, Louis XIII of France made him Governor of Catalonia.
In later life, Louis XIV of France made him Lord of Thuir.
Pella i Forgas, Josep Un baro illustre: Josep Margant i Biure, Barcelona, 1875