Which country should you register in first?

Couples planning a marriage between Japan and Korea often wonder whether to register in Korea or in their home country first. The answer depends on the requirements each country sets for foreign spouses, so it is worth confirming both before you file anything. As of October 2026, the Japanese Ministry of Justice is the main official source for marriage registration (koseki) procedures in Japan, according to its website at www.moj.go.jp.

Where can you find official marriage registration information?

The Japanese Ministry of Justice lists 結婚・離婚・出産（戸籍）, covering marriage, divorce, and birth registration, under its family and property section. Its applications and consultation section includes guidance on administrative procedures and consultation desks you can contact with questions. For Korean-side rules, check the official Korean government portals directly.

What documents and translations are needed?

The source material used for this guide does not include specific lists of required documents, translation rules, or apostille procedures for Korean marriage registration. Requirements for documents and certified translations can change, so confirm them with the relevant office in each country before you start. The Ministry of Justice also offers a foreign-language translation database of laws, which can help you read the relevant legal terms.

For international fans

If you are planning a cross-border marriage, begin by contacting the registration office in the country where you plan to file. Ask whether a document must be translated, certified, or apostilled before it is accepted, and get the answer in writing if possible. Requirements differ by case, so official confirmation is the most reliable approach.