The Celtic League is a political and cultural organisation that supports the nationalist movements in the Celtic nations of Ireland, Scotland, Wales, Brittany, Cornwall and the Isle of Man.
The aims of the League are the fostering co-operation between Celtic peoples; the development of a special relationship and solidarity between them; making the nationalist movements and nations' achievements better known abroad; campaigning for a formal association of Celtic nations to take place once two or more of them have achieved self-government; the advocation of the use of the national resources of each of the Celtic countries for the benefit of all its people.
They publish a magazine Carn to highlight and further these aims.
The Celtic League should not be confused with the similar organisation, the Celtic Congress.