Charles Borromeo (, , 1538–1584) was a cardinal who was archbishop of Milan from 1564 to 1584. Among the great reformers of the troubled sixteenth century, Borromeo, with St. Ignatius of Loyola, St. Philip Neri, and others, led the movement to combat the inroads of the Protestant Reformation. He was a leading figure during the Counter-Reformation and was responsible for significant reforms in the Catholic Church, including the founding of seminaries for the education of priests. He is honoured as a saint in the Catholic Church and his feast day is 4 November.