Nationality law

Nationality is the legal relationship between a person and a state.

Multiple citizenship, also called dual citizenship or multiple nationality or dual nationality, is a person's citizenship status, in which a person is concurrently regarded as a citizen of more than one state under the laws of those states.

Citizenship of the European Union was introduced by the Maastricht Treaty, which was signed in 1992, and has been in force since 1993.

This is a list of notable former United States citizens who voluntarily relinquished their nationality.

Renunciation is the voluntary act of relinquishing one's citizenship or nationality.

Coat of Arms of the United Kingdom British nationality law is the law of the United Kingdom which concerns citizenship and other categories of British nationality.

Nationality law is the law in each country and in each jurisdiction within each country which defines the rights and obligations of citizenship within the jurisdiction and the manner in which citizenship is acquired as well as how citizenship may be lost.

Article I, section 8, clause 4 of the United States Constitution expressly gives the United States Congress the power to establish a uniform rule of naturalization.

Spanish nationality law refers to all the laws of Spain concerning nationality.

An Oath of Citizenship is an oath taken by immigrants that officially naturalizes immigrants into citizens.

The Nationality Law of the People's Republic of China regulates nationality of the People's Republic of China.

In general, a Commonwealth citizen is a person who has that status under British nationality law and may enjoy some privileges in the United Kingdom and less commonly, other Commonwealth countries.

Iranian nationality law contains principles of both jus sanguinis and jus soli.