Ulster nationalism is a school of thought in Northern Ireland politics that seeks the independence of Northern Ireland from the United Kingdom without joining the Republic of Ireland, thereby becoming an independent sovereign state separate from both.
Independence has been supported by groups such as Ulster Third Way and some factions of the Ulster Defence Association. However, it is a fringe view in Northern Ireland. It is neither supported by any of the political parties represented in the Northern Ireland Assembly nor by the government of the United Kingdom or the government of the Republic of Ireland.
Although the term Ulster traditionally refers to one of the four traditional provinces of Ireland which contains Northern Ireland as well as parts of the Republic of Ireland, the term is often used within unionism and Ulster loyalism (from which Ulster nationalism originated) to refer to Northern Ireland.
In November 1921, during negotiations for the Anglo-Irish Treaty, there was correspondence between David Lloyd George and Sir James Craig, respective prime ministers of the UK and Northern Ireland. Lloyd George envisaged a choice for Northern Ireland between, on the one hand, remaining part of the UK under the Government of Ireland Act 1920, while what had been Southern Ireland became a Dominion; and, on the other hand, becoming part of an all-Ireland Dominion where the Stormont parliament was subordinate to a parliament in Dublin instead of Westminster. Craig responded that a third option would be for Northern Ireland to be a Dominion in parallel with Southern Ireland and the "Overseas Dominions", saying "while Northern Ireland would deplore any loosening of the tie between Great Britain and herself she would regard the loss of representation at Westminster as a less evil than inclusion in an all-Ireland Parliament".