The visa policy of Ireland is set by the Government of Ireland and determines visa requirements for foreign citizens. If someone other than a European Union, European Economic Area, or Swiss citizen seeks entry to Ireland, they must be a national of a visa-exempt country or have a valid Irish visa issued by one of the Irish diplomatic missions around the world. 

Please Check if you need a visa: http://www.inis.gov.ie/en/INIS/Pages/Irish%20Visa%20Information