|Regions with significant populations|
| United States:
|Irish, English, Ulster Scots, Shelta|
|Roman Catholic (majority), Protestantism, and other Christian faiths.|
|Related ethnic groups|
|Bretons, Cornish, English, Manx, Scottish, Ulster-Scots, Welsh, Basque, Galicians|
The Irish are an ethnic group who come from or came from the island of Ireland. There are two countries on Ireland called the Republic of Ireland and Northern Ireland. Many countries, especially English-speaking countries, have people with Irish roots.
In Northern Ireland, there have been violent fights between the Unionists, who claim to be British and are mainly Protestant, and the Nationalists, who claim to be Irish and are mainly Catholic. Irish people have a strong culture and many beliefs.
Due to problems in Ireland, most importantly a famine that made it difficult to grow potatoes in Ireland between 1845 and 1852, many Irish moved out of Ireland and to other countries, such as the United States and Canada. At present, many more Irish live in the United States than in Ireland, with many of them living in large American cities such as Boston, New York, and Chicago.