The Kingdom of Cambodia judges birthright citizenship by the rule of jus sanguinis (right of blood) and jus soli (right of soil). Persons born in Cambodia or overseas to a Cambodian mother or father have the right to Cambodian nationality by birth. Children born in Cambodia with three consecutive years of residence and whose foreign parents were legal residents at the time of birth can claim a Cambodian passport by birthright.

Hereby Chapter 5 Cambodian Citizenship through Marriage by Royal Law

The foreign spouse of a Cambodian national is eligible to submit an application for naturalization in Cambodia after three years of marriage. Living in Cambodia for three years before applying for citizenship is not required.

Article 10 of the Nationality

Law of 1996: For foreigners who have obtained an investment authorization letter from the Council for the Development of Cambodia (CDC) and have concretely implemented the actual project costs and spent an initial capital of 1,250,000,000 riels (approximately US$312,500) or more, their residence period shall be the residence period specified by the Council for the Development of Cambodia (CDC). The residence requirement stipulated in Article 8, paragraph 3 of this Law is exempted. Article 11: Foreigners who do not have an investment authorization letter from the Council for the Development of Cambodia (CDC) but have obtained legal investment authorization from the Royal Government and have an initial capital expenditure of 1,250,000,000 riels (approximately US$312,500) or more are exempted from the residence requirement stipulated in Clause 3 of Article 8 of this Law

Article 23 Foreigners who have made special contributions or achievements in the interests of the Kingdom of Cambodia and are recognized by the Royal Government of Cambodia may apply to obtain Cambodian nationality through naturalization if they meet the conditions of Article 19, Paragraphs 1, 2 and 6 of this Law.

Last year, Cambodia announced that it was launching a Golden Visa program, a residency-by-investment scheme. Also called the Cambodia My Second Home Program (CM2H), eligible investors must invest a minimum of 480 million Riel ($120,000). According to the Cambodian government, this is a government-endorsed initiative, acknowledged by the Ministry of Interior and General Department of Immigration. It grants foreigners a ten-year Golden Visa, enabling them to stay in Cambodia. After five years, CM2H holders are eligible to apply for a Cambodian passport. The CM2H program is accessible to individuals from all countries acknowledged by Cambodia, subject to specific investment and financial criteria. Successful candidates encounter no constraints on entering or exiting Cambodia.