Willem de Clercq (15 January 1795 – 4 February 1844) was a poet and leader of the Réveil, the Protestant Church Revival in the Netherlands. He is known for his diary entries, which contain extensive reports of the events he witnessed. He was also a secretary (1824-1831) and later a director (1831–1844) of the Netherlands Trading Society (Nederlandsche Handel-Maatschappij or NHM).