Démosthènes Pétrus Calixte (c. 1899 – unknown) was a Haitian conservative noirist politician and military figure who led the Garde d'Haïti. In 1937, Calixte became involved in political chaos, where officers within the Garde tried to overthrow president Sténio Vincent and replace him with Calixte. This led to the replacement of Calixte, who fled to the Dominican Republic. Upon his return in the 1940s, Calixte was made a presidential candidate by the Mouvement Ouvriers et Paysans in 1946. However, he lost the election to Dumarsais Estimé.