Place names in Ireland

The vast majority of placenames in Ireland are anglicisations of Irish language names; that is, adaptations of the Irish names to English phonology and spelling. However, some names come directly from the English language, and a handful come from Old Norse and Scots. The study of placenames in Ireland unveils features of the country's history and geography and the development of the Irish language. The name of Ireland itself comes from the Irish name Éire, added to the Germanic word land. In mythology, Éire was an Irish goddess of the land and of sovereignty (see Ériu).

In some cases, the official English or anglicised name is wholly different from the official Irish language name. An example is Dublin: its name is derived from the Irish dubh linn (meaning "black pool"), but its Irish name is Baile Átha Cliath (meaning "town of the hurdled ford").