[7] Foreigners can also acquire Peruvian nationality, including: Supreme Court of the RepublicPresident Javier Arévalo Vela [es] In common with many other Ibero-American countries, Peru's 1993 constitution explicitly states that nationals of Latin American countries and Spain do not lose their nationality upon acquiring Peruvian citizenship (many Latin American countries and Spain have similar reciprocal laws).

In practice, multiple nationality is acknowledged and accepted by Peru and its consular and diplomatic staff.

A person who has two years of legal residency in Peru, be it by marriage or other reasons such as work, can apply for naturalization.

In 1834 a new constitution made provisions for foreigners married to Peruvian woman or those who practiced a profession or art to become naturalized after two years residency.

[15][16] The 1933 constitution provided additionally that foundlings of unknown parentage were considered to have been born in Peru and were entitled to Peruvian nationality.

[18] To repatriate, a woman could regain Peruvian nationality upon termination of the marriage by establishing her domicile in the territory.

[19] In 1933, Alfredo Solf y Muro, the Peruvian delegate to the Pan-American Union's Montevideo conference, signed the Inter-American Convention on the Nationality of Women, which became effective in 1934, without legal reservations.