The law regulating citizenship in Slovenia is based on the Citizenship Act of 1991 as last amended in 2006. The granting of citizenship in Slovenia is mainly based on the principle of ius sanguinis and citizenship is granted automatically to children born in Slovenia to at least one Slovenian parent, or in cases where both parents are Slovenian citizens.
Foreign citizens may also acquire Slovenian citizenship either by naturalisation on the basis of a ten-year residence period in Slovenia, by descent or else because of special interests of the state.
The law allows Slovenian citizens the right to hold multiple citizenship without losing their Slovenian citizenship. Additionally, a dual or multiple citizens is treated as a citizen of the Republic of Slovenia, while in the territory of Slovenia, unless otherwise stated by an international agreement. Moreover, in Slovenia there are no consequences in relation to the registration or renunciation of original citizenship and dual citizenship is allowed without any special conditions.