The Conservative–DUP agreement between the Conservative Party and the Democratic Unionist Party (DUP) followed the 2017 United Kingdom general election which resulted in a hung parliament. Negotiations between the two parties began on 9 June, the day after the election, and the final agreement was signed and published on 26 June 2017.

The 2017 United Kingdom general election was held on Thursday 8 June 2017, two years after the previous general election in 2015; it was the first since 1992 to be held on a day that did not coincide with any local elections. The governing Conservative Party remained the largest single party in the House of Commons but lost its small overall majority, resulting in the formation of a Conservative minority government with a confidence and supply agreement with the Democratic Unionist Party (DUP) of Northern Ireland.