Texas Northern Ireland portalCurrent events portalHistory portal 21st century in Northern Ireland. 16th17th18th19th20th21st22nd23rd24th25th26th Subcategories This category has the following 18 subcategories, out of 18 total. Years of the 21st century in Northern Ireland (27 C, 24 P)/ 21st-century disestablishments in Northern Ireland (3 C) 21st-century establishments in Northern Ireland (4 C)0–9 2000s in Northern Ireland (17 C, 21 P) 2010s in Northern Ireland (17 C, 19 P) 2020s in Northern Ireland (13 C, 6 P)A 21st century in County Antrim (4 C, 6 P) 21st-century architecture in Northern Ireland (1 C, 13 P) 21st century in County Armagh (1 C, 2 P)B 21st century in Belfast (1 C, 26 P)C 21st-century crimes in Northern Ireland (3 C)D 21st century in County Down (3 C, 7 P)F 21st century in County Fermanagh (6 P)L 21st-century literature from Northern Ireland (1 C) 21st century in County Londonderry (2 C, 6 P)P 21st-century people from Northern Ireland (4 C, 10 P)T 21st century in Northern Ireland television (3 C) 21st century in County Tyrone (12 P)