The Celtic nations are territories in Northern and Western Europe where Celtic languages or cultural traits have survived.
The term "nation" is used in its original sense to mean a people who share a common identity and culture and are identified with a traditional territory. It is not synonymous with "sovereign state".
The six territories recognised as Celtic nations are Brittany (Breizh), on the European continent; Cornwall (Kernow), Wales (Cymru), Scotland (Alba), Ireland (Éire), and the Isle of Man (Mannin). Each of these regions has a Celtic language that is either still spoken or was spoken into modern times. Territories in north-western Iberia—particularly Galicia, Northern Portugal and Asturias; sometimes referred to as Gallaecia, which includes North-Central Portugal—are sometimes included due to their culture and history. Unlike the others, however, no Celtic language has been spoken there in modern times. Before the expansions of Ancient Rome and the Germanic tribes, a significant part of Europe was dominated by Celtic culture.