Juan Vicente de Güemes Padilla Horcasitas y Aguayo, 2nd Count of Revillagigedo (Spanish, with variant name: Juan Vicente de Güemes Pacheco de Padilla y Horcasitas, segundo conde de Revillagigedo) (1740, Havana – May 2, 1799, Madrid) was a Spanish military officer and viceroy of New Spain from October 17, 1789 to July 11, 1794. He is known as a great reformer and one of the finest administrators of the Spanish colonial era—perhaps the last able viceroy of New Spain.