George Calavassy (Greek: Γεώργιος Χαλαβαζής; February 2, 1881 in Greece – November 7, 1957 in Greece) was a Catholic prelate belonging to Apostolic Exarchate of Constantinople from 13 July 1920 to 11 June 1932, and Exarch of the Greek Byzantine Catholic Church from 11 June 1932 to 7 November 1957.