Tyne and Wear /ˌtaɪn ən ˈwɪə/ is a metropolitan county in North East region of England around the mouths of the Rivers Tyne and Wear. It came into existence as a metropolitan county in 1974 after the passage of the Local Government Act 1972. It consists of the five metropolitan boroughs of South Tyneside, North Tyneside, City of Newcastle upon Tyne, Gateshead and the City of Sunderland.
Prior to reforms in 1974, the territory comprising the county of Tyne and Wear straddled the border between the counties of Northumberland and County Durham. North Tyneside and Newcastle upon Tyne had previously existed within the county of Northumberland, whereas South Tyneside, Gateshead and Sunderland were all previously within the borders of County Durham, with the River Tyne forming the border of the two counties.
Tyne and Wear County Council was abolished in 1986, and so its districts (the metropolitan boroughs) are now unitary authorities. However, the metropolitan county continues to exist in law and as a geographic frame of reference.