1927 in Northern Ireland
Events during the year 1927 in Northern Ireland.
- 12 April – The Royal and Parliamentary Titles Act 1927 renames the United Kingdom of Great Britain and Ireland to the United Kingdom of Great Britain and Northern Ireland. The change acknowledges that the Irish Free State is no longer part of the Kingdom.
- The Evangelical Presbyterian Church breaks away from the Presbyterian Church in Ireland.
- Winners: Belfast Celtic
- British Ladies Amateur Golf Championship is held at Royal County Down Golf Club (winner: Simone de la Chaume).
- Belvoir Park Golf Club opened in Belfast.
- 19 May – Billy McMillen, Official Irish Republican Army officer (killed in feud with Irish National Liberation Army 1975).
- 8 June – Brendan Smyth, Catholic priest and convicted child molester (died 1997).
- 2 July – R. J. G. Savage, palaeontologist (died 1998 in England).
- 8 July – Maurice Hayes, public servant, writer and independent member of Seanad Éireann (died 2017).
- July - Thomas Teevan, Unionist politician and lawyer (died 1954).
- 31 August – Thomas McCloy, cricketer (died 2014).
- 1 October – Alf McMichael, footballer (died 2006).
- 23 November – John Cole, political journalist and broadcaster (died 2013 in England).
- Full date unknown - Deborah Brown, sculptor.