John Anthony McGuckin (born 1952) is a British theologian, church historian, Orthodox Christian priest and poet.
He currently serves on the faculty of church history at Oxford University, and is a fellow of the Royal Historical Society of the United Kingdom.
He is director of the Sophia Institute: International Center for Orthodox Thought and Culture, which has its offices on the Union Seminary campus in Manhattan.
He was awarded the Jeweled Cross of Moldavia and Bukovina by Romanian Patriarch Daniel in 2007 for his services to the church and the academy.
On 31 January 2014, McGuckin was awarded the Jeweled Cross by Metropolitan Tikhon of Washington for his services to church and academy.