Charles Reynolds (Irish: Cathal Mac Raghnaill) (c. 1496 – July 1535) was an Irish Catholic cleric, canonist, and diocesan administrator. Born in County Leitrim, son of Marcus MacRaghnaill, Reynolds entered a religious order and was appointed to influential posts as archdeacon and chaplain to the Earl of Kildare. His name in native Irish is Cathal Mac Raghnaill, but he anglicized his name to Charles Reynolds in order secure ecclesiastical benefices under English laws. He was educated at the University of Oxford and fluent in English, Irish, and Latin. Reynolds opposed Henry VIII of England's separation from the Catholic Church, declining to acknowledge him as Supreme Head of the Church of England and refusing to acknowledge the annulment of his marriage to Catherine of Aragon.