Celtic nations

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historic nation and a self-governing British Crown dependency

Ireland is an island in the North Atlantic Ocean, in Northwestern Europe. Geopolitically, the island is divided between the Republic of Ireland (officially named Irelanda sovereign state covering five-sixths of the island) and Northern Ireland (part of the United Kingdomcovering the remaining sixth). It is separated from Great Britain to its east by the North Channel, the Irish Sea, and St George's Channel. Ireland is the second-largest island of the British Isles, the third-largest in Europe, and the twentieth-largest in the world. As of 2022, the population of the entire island is just over

Brittany ( ) is a peninsula, historical country and cultural area in the north-west of modern France, covering the western part of what was known as Armorica in Roman Gaul. It became an independent kingdom and then a duchy before being united with the Kingdom of France in 1532 as a province governed as a separate nation under the crown. Brittany is the traditional homeland of the Breton people and is one of the six Celtic nations, retaining a distinct cultural identity that reflects its history.

Loire-Atlantique (; Gallo: Louére-Atantique; ; before 1957: Loire-Inférieure, ) is a department in Pays de la Loire on the west coast of France, named after the river Loire and the Atlantic Ocean. It had a population of 1,487,570 in 2023.

territories in Northern and Western Europe in which Celtic cultural traits have survived