Francisco Pérez del Río (bap. 3 November 1564 – 27 November 1644), known by his pseudonym Francisco Pacheco, was a Spanish painter, best known as the teacher of Alonso Cano and Diego Velázquez, as well as the latter's father-in-law. His textbook on painting, entitled Art of Painting, published posthumously, is an important source for the study of 17th-century practice in Spain.
