This article is broadly based upon a presentation given by Gordon Anthony, which was given at the annual conference of the British and Irish Association of Law Librarians on 15 June 2012 in Belfast. Its purpose is to outline some of the ways in which public law in Northern Ireland is unique within the wider setting of the UK. Although it is true that the law of Northern Ireland shares much in common with principle and practice elsewhere in the UK, there are some notable differences that are attributable to the fact that Northern Ireland has its own court system and legal and political history. The article thus examines some of the differences that exist at the constitutional level and which can be associated with, most famously, the Belfast Agreement 1998. It also summaries some of the differences that can be found at the level of legal citation, for instance of case law and statute law for the jurisdiction.