The Church of England border polls 1915–1916 were a series of referendums held in January and February 1915 (with second polls being held in two parishes in March 1916), for residents of living in nineteen Church of England parishes, the boundaries of which crossed the England–Wales border. They were carried out to determine if the parish residents wished their parish to remain part of the Church of England or to become part of the Church in Wales when the Welsh Church Act 1914 took effect. (Its implementation was delayed because of the First World War and it did not take effect until 31 March 1920). The polls eventually resulted in all but one of the border parishes voting to remain with the Church of England.