This is a list of place names in which the categories include Celtic nations.
Brittany(Region)English From Britannia (see Britain). This is the name of a region in northwestern France, so called because many Britons settled there after the fall of the Western Roman Empire. It had earlier been called Armorica. In the Middle Ages it was sometimes called Britannia Minor to distinguish it from the island of Great Britain. In French, both the island and the region are called Bretagne.
Cymru(Country)Welsh From the Celtic roots *kom "with, together" and *mrogis "territory, region". This is the Welsh name for Wales.
Éire(Country & Island)Irish Possibly means "abundant land" in Old Irish. This is the Irish name of the country and island of Ireland. According to legend the island was named for the goddess Ériu, though in fact it was she who was named for the island.
Ireland(Country & Island)English Derived from Irish Gaelic Éire and English land. This is the name of an island to the west of Great Britain. The country of Ireland occupies the majority of the island.
Man(Island)English From Old Irish Mana, possibly from the Celtic root *moniyo- meaning "mountain". The Isle of Man is an island between Britain and Ireland. It is a self-governing British dependency.
Mannin(Island)Manx Manx form of Man (from Manainn, the Old Irish dative case of Mana).
Scotland(Country)English Means "land of the Scots", from Latin Scoti meaning "Gaelic speaker". This is the name of a country (part of the United Kingdom) in the north of the island of Great Britain.
Wales(Country)English, German, Dutch From Old English Wealas, derived from wealh meaning "foreigner, Celt". This is the name of a country (part of the United Kingdom) in the west of the island of Great Britain. In Welsh it is called Cymru.