St John's Church, Old Colwyn, is on Station Road, Old Colwyn, in Conwy County Borough, Wales. It is a member church of the Aled Mission Area, in the archdeaconry of St Asaph and the diocese of St Asaph. St John's was built as the daughter church of St Catherine's Church, Abergele Road, Colwyn. It is designated by Cadw as a Grade II* listed building.