Berwick-upon-Tweed (/ˌbɛrɪk-/ ⓘ) was a parliamentary constituency[n 1] in Northumberland represented in the House of Commons of the UK Parliament from 2015 until its abolition for the 2024 general election by Anne-Marie Trevelyan, a Conservative.

A proposal to rename the historic seat "Berwick-upon-Tweed and Mid Northumberland" was rejected: whilst it is geographically accurate, it was thought unwieldy.

Rural in nature, sparse of population and with agriculture as a major source of employment, Berwick-upon-Tweed has never elected a Labour candidate, one of two constituencies in the north-east of England not to have done so.

The closest Labour has ever come to winning the seat was at the 1966 general election, where they finished just 4,373 votes behind incumbent Conservative MP Antony Lambton.

The area has been notable for its Liberal politicians – both Sir William Beveridge (influential in the formation of the National Health Service) and Edward Grey (Foreign Secretary at the beginning of World War I, best remembered for the "lamps are going out all over Europe...." remark) have served this constituency.

Beith was first elected at a by-election, required as a result of the resignation of the then incumbent MP Antony Lambton (Conservative), who had been caught up in a scandal involving call girls, marijuana and a tabloid newspaper.