|Act of Parliament|
|Long title||An Act to make new provision for the government of Northern Ireland for the purpose of implementing the agreement reached at multi-party talks on Northern Ireland set out in Command Paper 3883.|
|Citation||1998 c. 47|
|Introduced by||Mo Mowlam, Secretary of State for Northern Ireland|
|Territorial extent||United Kingdom|
|Royal assent||19 November 1998|
|Text of statute as originally enacted|
|Revised text of statute as amended|
The Northern Ireland Act 1998 is an Act of the Parliament of the United Kingdom which established a devolved legislature for Northern Ireland, the Northern Ireland Assembly, after decades of direct rule from Westminster.
It repealed parts of the Government of Ireland Act 1920 and Northern Ireland Constitution Act 1973, and established new rules in line with the European Union and the Northern Ireland peace process, subsequent to the Belfast Agreement of 1998.
The Act allows for a devolved Northern Ireland Assembly of 108 members. Membership of the assembly is subject to a pledge of office, which subjects the member to certain requirements with regard to standards and responsibilities. Northern Ireland remains a part of the United Kingdom until or unless a majority vote in a referendum determines otherwise. The Secretary of State for Northern Ireland holds the power to call for the referendum if it appears likely to him that a majority of the voters would express their desire to become part of a United Ireland. The Assembly has the power of modifying any Act of the British Parliament as far as it "is part of the law of Northern Ireland". They cannot deal, however, with reserved or excepted matters, which are of exclusive competence of the government of the United Kingdom, in consultation with the Republic of Ireland through the British-Irish Intergovernmental Conference. The Assembly has been suspended a number of times since 1998, and was re-established on Tuesday 8 May 2007, subsequent to the St Andrews Agreement of 2006.
- "This section does not affect the power of the Parliament of the United Kingdom to make laws for Northern Ireland, but an Act of the Assembly may modify any provision made by or under an Act of Parliament in so far as it is part of the law of Northern Ireland." Northern Ireland Act 1998, Part II, Legislative Powers
- Forman, F. N. :Constitutional change in the United Kingdom. University College, London. Constitution Unit. Routledge, 2002, p. 71. ISBN 0-415-23035-7
- Aughey, Arthur: The politics of Northern Ireland: beyond the Belfast Agreement. Routledge, 2005, p. 92. ISBN 0-415-32788-1
- Walker, Graham. "Scotland, Northern Ireland, and Devolution, 1945–1979," Journal of British Studies Jan. 2010, Vol. 49, No. 1: 117-142.