The United Kingdom devolves political power in Northern Ireland to the Northern Ireland Executive following the Good Friday Agreement.

Northern Ireland is a part of the United Kingdom in the north-east of the island of Ireland. It has been variously described as a country, province or region. Northern Ireland shares an open border to the south and west with the Republic of Ireland. At the 2021 census, its population was 1,903,175, making up around 3% of the UK's population and 27% of the population on the island of Ireland. The Northern Ireland Assembly, established by the Northern Ireland Act 1998, holds responsibility for a range of devolved policy matters, while other areas are reserved for the UK Government. The government of Northern Ireland cooperates with the government of Ireland in several areas under the terms of the Good Friday Agreement. The Republic of Ireland also has a consultative role on non-devolved governmental matters through the British–Irish Governmental Conference (BIIG).

The Northern Ireland Executive is the devolved government of Northern Ireland, an administrative branch of the legislature – the Northern Ireland Assembly, situated in Belfast. It is answerable to the assembly and was initially established according to the terms of the Northern Ireland Act 1998, which followed the Good Friday Agreement. The executive is referred to in the legislation as the Executive Committee of the assembly and is an example of consociationalist ("power-sharing") government.

The Good Friday Agreement (GFA) or Belfast Agreement is a pair of agreements signed on 10 April 1998 that ended most of the violence of the Troubles, an ethnic and national conflict in Northern Ireland since the late 1960s. It was a major development in the Northern Ireland peace process of the 1990s. It is made up of the Multi-Party Agreement between most of Northern Ireland's political parties, and the British–Irish Agreement between the British and Irish governments. Northern Ireland's present devolved system of government is based on the agreement.