Nicolas de Thou (1528 – 5 November 1598) was a French prelate of the Catholic Church. He was a cleric, Bishop of Chartres, and, in politics, a figure instrumental in the coronation of Henry IV of France, the first monarch of the Bourbon dynasty in France. Born in Paris, de Thou was a son of (d. 1544), Président of the Parlement de Paris; brother to Christophe de Thou (1508–82), who became Premier Président of the Parlement de Paris; and later, uncle to noted historian Jacques-Auguste de Thou.