Solomon Islands nationality law is regulated by the 1978 Constitution of Solomon Islands, as amended; the Citizenship Act 2018, and its revisions; and international agreements entered into by the government of Solomon Islands.[1][2] These laws determine who is, or is eligible to be, a national of Solomon Islands. The legal means to acquire nationality, formal legal membership in a nation, differ from the domestic relationship of rights and obligations between a national and the nation, known as citizenship.[3][4] Solomon Islander nationality is typically obtained either on the principle of jus soli, i.e. by birth in the Solomon Islands or under the rules of jus sanguinis, i.e. by birth abroad to parents with Solomon Islander nationality.[5] It can be granted to persons who have lived in the country for a specific period of time, or who have an affiliation to the country through naturalisation.[6]