José Francisco de Isla (April 24, 1703 – November 2, 1781) was a Spanish Jesuit, celebrated as a preacher and a humorist and satirist of the stamp of Cervantes.
De Isla's parents were José Isla de la Torre and Ambrosia Rojo. Although born accidentally in Vidanes (close to Cistierna) in the eastern Leonese mountain, he spent his childhood in the village of Valderas where his mother was a native, in the southern province of Leon. Premature, bright and highly gifted intellectually, he was a compulsive reader from childhood and graduated with his bachiller in law at eleven years old, according to his biographer Jose Ignacio de Salas. He entered the Society of Jesus at sixteen (1719) in the novitiate of Villagarcía de Campos, studying philosophy and theology at the University of Salamanca. At nineteen he translated History of the Emperor Teodosio de Flechier. In collaboration with a teacher, also a Jesuit, Father Luis de Lozada (1681-1748), he wrote La juventud triunfante (Triumphant Youth) (Salamanca, 1727), a description in prose and verse, interspersed with four comedies by unnamed authors, on feasts celebrated, in recognition of the canonization of St. Aloysius Gonzaga and St. Stanislaus Kostka.
De Isla was a professor of philosophy and theology in Segovia, Santiago de Compostela, Medina del Campo and Pamplona. In Pamplona he translated The Compendium of the History of Spain by Father Duchesne and the Christian Year by Father Jean Croisset, also noted as a preacher in Valladolid and Zaragoza.