Addington is a civil parish in Restigouche County, New Brunswick, Canada. For governance purposes it is divided between the city of Campbellton, the villages of Atholville and Tide Head, and the local service districts of Flatlands, Glencoe, and the parish of Addington, all of which are members of the Restigouche Regional Service Commission (RRSC). On 1 January 2023, Glencoe and bordering areas of the LSD of the parish of Addington will become part of the city of Campbellton; Flatlands and the remainder of the parish LSD will become part of the Restigouche rural district.