The currency used in Dublin, Ireland, is the euro. Ireland is one of 17 countries that uses the euro as its official form of currency.
Dublin is part of the Republic of Ireland and is located in the southern portion of the country. Since Northern Ireland has long been separated from the southern part in terms of culture, it uses the pound sterling instead of the euro in accordance with its connection to the United Kingdom. This is important to keep in mind when traveling to Ireland if the itinerary includes many different destinations within the country. Travelers only going to Dublin can function by just carrying the euro.