Northern Ireland is the part of Ireland (the island) which stayed a part of the United Kingdom when Ireland (the state) gained independence.
Alternate versions of Northern Ireland have been discovered throughout the multiverse:
- Northern Ireland (1983: Doomsday)
- Northern Ireland (Better World)
- Northern Ireland (Hitler's Win)
- Northern Ireland (Modern Mess)
- Northern Ireland (Scotland says "Yes")
- Northern Ireland (Twilight of a New Era)
- Northern Ireland (The Red Baron Lives)
- Northern Ireland (Regem Britanniae)