(law) The bringing together of family members so that they can live in the same country.

the process of re-establishing Germany as a single sovereign state, which began on 9 November 1989 and culminated on 3 October 1990 with the dissolution of the German Democratic Republic and the integration of its re-established constituent federated states into the Federal Republic of Germany to form present-day Germany.

the hypothetical unification of North Korea and South Korea into a singular Korean sovereign state.

Indian reunification refers to the potential reunification of India (the Republic of India) with Pakistan and Bangladesh, which were partitioned from British India in 1947.

Central American reunification, sometimes called Central Americanism, is the proposed political union of the countries of Central America (Costa Rica, El Salvador, Guatemala, Honduras, and Nicaragua), which had historically occurred during the existence of the Federal Republic of Central America.

Following the Sack of Ayutthaya and the collapse of the Ayutthaya Kingdom during the Burmese–Siamese War, a power vacuum left Siam divided into 5 separate states—Phimai, Phitsanulok, Sawangburi, Nakhon Si Thammarat, and Thonburi.

The Democratic Front for the Reunification of Korea, also known as the Democratic Front for the Reunification of the Fatherland or the Fatherland Front, was a North Korean popular front formed on 25 June 1949 and led by the Workers' Party of Korea.