All passport applications are subject to the provisions of the Passports Act, 2008 ("The 2008 Act"). The 2008 Act provides, among other things, that a person must be an Irish citizen before a passport can be issued to him or her. In order to meet this requirement, each person must demonstrate an entitlement to Irish citizenship by providing acceptable documentary evidence of this entitlement.
Entitlement to Irish citizenship is determined by the Irish Nationality and Citizenship Act 1956, as amended, under which Irish citizenship may be obtained by birth, by descent, or by naturalisation.
In cases where no Irish lineage exists, an individual may apply for Irish citizenship through naturalisation. Minimum residency terms must be satisfied before an individual is eligible for citizenship through naturalisation. The Department of Justice is responsible for citizenship matters, including applications for naturalisation.