Martín Fernández de Enciso (c. 1470 – 1528) was a Spanish lawyer, colonial official and geographer. He was intrumental in the colonization of the Isthmus of Darien, one of Spain's earliest attempts to occupy the mainland of the Americas. His successful advocacy for the rights of the Crown in the Indies led to the publication of the proclamation known as the Requerimiento in 1513. In 1519 he published Suma de Geografía, the first Spanish-language account of the New World.