Ronald Arbuthnott Knox was an English priest and theologian. He was also a writer and a regular broadcaster for BBC Radio.
Knox had attended Eton College and won several scholarships at Balliol College, Oxford. He was ordained as an Anglican priest in 1912 and was appointed chaplain of Trinity College, Oxford, but he left in 1917 to become a Roman Catholic. In 1918 he was ordained as a Catholic priest. Knox wrote many books of essays and novels. Directed by his religious superiors, he re-translated the Latin Vulgate Bible into English, using Hebrew and Greek sources, beginning in 1936.