# Registration (登記, とうき)

This is the Markdown twin of https://japanlaw.org/en/concepts/registration. Every law, and how to address a provision: https://japanlaw.org/llms.txt. The same laws as MCP tools (no sign-in): https://japanlaw.org/mcp.

- Group: Rights, roles and legal effects
- URL: https://japanlaw.org/en/concepts/registration
- In Japanese: https://japanlaw.org/ja/concepts/registration
- Written by: claude-opus-5-5, 2026-09-23

Entry in a public register kept by a registry office (登記所) — a Legal Affairs Bureau or one of its branch offices — so that the matter is made public (Real Property Registration Act, Articles 1 and 6, paragraph (1)). Rights in land and buildings, such as ownership, a superficies (地上権), a statutory lien (先取特権), a mortgage and a right of lease (賃借権), can be registered under that Act (Article 3), and matters the Commercial Code, the Companies Act and other Acts require to be registered are registered under the Commercial Registration Act (Article 1). Registration also lets a right be asserted against third parties: acquiring, losing or changing a right in rem (物権) in land or a building, such as ownership, cannot be asserted against third parties until it is registered (Civil Code, Article 177), and a matter the Companies Act requires to be registered cannot be asserted against a third party who does not know of it until it has been registered, nor, even after that, against one who had a justifiable reason for not knowing of the registration (Companies Act, Article 908, paragraph (1)).

Written for this site by an AI model from the provisions and pages it cites. Each sentence was checked against them by a separate AI model run and revised to its findings. Not reviewed by a lawyer.

## Provisions and sources it draws on

- [Real Property Registration Act, Arts. 1, 3, 6](https://laws.e-gov.go.jp/law/416AC0000000123) — on this site: https://japanlaw.org/en/real-property-registration-act
- [Commercial Registration Act, Art. 1](https://laws.e-gov.go.jp/law/338AC0000000125)
- [Civil Code, Art. 177](https://laws.e-gov.go.jp/law/129AC0000000089) — on this site: https://japanlaw.org/en/civil-code
- [Companies Act, Art. 908](https://laws.e-gov.go.jp/law/417AC0000000086) — on this site: https://japanlaw.org/en/companies-act

## Where the laws use it

21 laws in force use it in this sense, in 417 provisions; there the word opens this explanation.

- [Real Property Registration Act (不動産登記法)](https://japanlaw.org/en/real-property-registration-act): 118 provisions, among them [Article 1](https://japanlaw.org/en/real-property-registration-act/art-1), [Article 2](https://japanlaw.org/en/real-property-registration-act/art-2), [Article 3](https://japanlaw.org/en/real-property-registration-act/art-3)
- [Companies Act (会社法)](https://japanlaw.org/en/companies-act): 60 provisions, among them [Article 22](https://japanlaw.org/en/companies-act/art-22), [Article 34](https://japanlaw.org/en/companies-act/art-34), [Article 49](https://japanlaw.org/en/companies-act/art-49)
- [Civil Code (民法)](https://japanlaw.org/en/civil-code): 41 provisions, among them [Article 36](https://japanlaw.org/en/civil-code/art-36), [Article 37](https://japanlaw.org/en/civil-code/art-37), [Article 177](https://japanlaw.org/en/civil-code/art-177)
- [Financial Instruments and Exchange Act (金融商品取引法)](https://japanlaw.org/en/financial-instruments-and-exchange-act): 37 provisions, among them [Article 60-4](https://japanlaw.org/en/financial-instruments-and-exchange-act/art-60-4), [Article 65](https://japanlaw.org/en/financial-instruments-and-exchange-act/art-65), [Article 66-46](https://japanlaw.org/en/financial-instruments-and-exchange-act/art-66-46)
- [Local Tax Act (地方税法)](https://japanlaw.org/en/local-tax-act): 35 provisions, among them [Article 14-9](https://japanlaw.org/en/local-tax-act/art-14-9), [Article 14-11](https://japanlaw.org/en/local-tax-act/art-14-11), [Article 14-12](https://japanlaw.org/en/local-tax-act/art-14-12)
- [Act on Special Measures Concerning Taxation (租税特別措置法)](https://japanlaw.org/en/special-taxation-measures-act): 33 provisions, among them [Article 72](https://japanlaw.org/en/special-taxation-measures-act/art-72), [Article 72-2](https://japanlaw.org/en/special-taxation-measures-act/art-72-2), [Article 73](https://japanlaw.org/en/special-taxation-measures-act/art-73)
- [Civil Enforcement Act (民事執行法)](https://japanlaw.org/en/civil-enforcement-act): 19 provisions, among them [Article 43](https://japanlaw.org/en/civil-enforcement-act/art-43), [Article 44](https://japanlaw.org/en/civil-enforcement-act/art-44), [Article 46](https://japanlaw.org/en/civil-enforcement-act/art-46)
- [Medical Care Act (医療法)](https://japanlaw.org/en/medical-care-act): 15 provisions, among them [Article 43](https://japanlaw.org/en/medical-care-act/art-43), [Article 46](https://japanlaw.org/en/medical-care-act/art-46), [Article 48](https://japanlaw.org/en/medical-care-act/art-48)
- [Bankruptcy Act (破産法)](https://japanlaw.org/en/bankruptcy-act): 10 provisions, among them [Article 49](https://japanlaw.org/en/bankruptcy-act/art-49), [Article 56](https://japanlaw.org/en/bankruptcy-act/art-56), [Article 78](https://japanlaw.org/en/bankruptcy-act/art-78)
- [Act on Public Consultants on Social and Labour Insurance (社会保険労務士法)](https://japanlaw.org/en/labor-and-social-security-attorney-act): 7 provisions, among them [Article 25-10](https://japanlaw.org/en/labor-and-social-security-attorney-act/art-25-10), [Article 25-12](https://japanlaw.org/en/labor-and-social-security-attorney-act/art-25-12), [Article 25-23](https://japanlaw.org/en/labor-and-social-security-attorney-act/art-25-23)
- [Real Estate Brokerage Act (宅地建物取引業法)](https://japanlaw.org/en/real-estate-brokerage-act): 6 provisions, among them [Article 35](https://japanlaw.org/en/real-estate-brokerage-act/art-35), [Article 37](https://japanlaw.org/en/real-estate-brokerage-act/art-37), [Article 41](https://japanlaw.org/en/real-estate-brokerage-act/art-41)
- [Act on Building Unit Ownership (建物の区分所有等に関する法律)](https://japanlaw.org/en/building-unit-ownership-act): 6 provisions, among them [Article 4](https://japanlaw.org/en/building-unit-ownership-act/art-4), [Article 23](https://japanlaw.org/en/building-unit-ownership-act/art-23), [Article 47](https://japanlaw.org/en/building-unit-ownership-act/art-47)
- [Act on Land and Building Leases (借地借家法)](https://japanlaw.org/en/land-and-building-leases-act): 4 provisions, among them [Article 10](https://japanlaw.org/en/land-and-building-leases-act/art-10), [Article 12](https://japanlaw.org/en/land-and-building-leases-act/art-12), [Article 31](https://japanlaw.org/en/land-and-building-leases-act/art-31)
- [Health Insurance Act (健康保険法)](https://japanlaw.org/en/health-insurance-act): 4 provisions, among them [Article 7-7](https://japanlaw.org/en/health-insurance-act/art-7-7), [Article 217-2](https://japanlaw.org/en/health-insurance-act/art-217-2), [Supplementary Provisions, Article 19](https://japanlaw.org/en/health-insurance-act/suppl-4181-83/art-19)
- [Act on Proper Technical Intern Training and Protection of Technical Intern Trainees (外国人の技能実習の適正な実施及び技能実習生の保護に関する法律)](https://japanlaw.org/en/technical-intern-training-act): 4 provisions, among them [Article 62](https://japanlaw.org/en/technical-intern-training-act/art-62), [Article 68](https://japanlaw.org/en/technical-intern-training-act/art-68), [Article 114](https://japanlaw.org/en/technical-intern-training-act/art-114)
- [Regulation for Enforcement of the Income Tax Act (所得税法施行規則)](https://japanlaw.org/en/income-tax-act-enforcement-regulation): 4 provisions, among them [Article 81](https://japanlaw.org/en/income-tax-act-enforcement-regulation/art-81), [Article 81-6](https://japanlaw.org/en/income-tax-act-enforcement-regulation/art-81-6), [Article 81-7](https://japanlaw.org/en/income-tax-act-enforcement-regulation/art-81-7)
- [Labor Union Act (労働組合法)](https://japanlaw.org/en/labor-union-act): 3 provisions, among them [Article 11](https://japanlaw.org/en/labor-union-act/art-11), [Article 13-5](https://japanlaw.org/en/labor-union-act/art-13-5), [Article 33](https://japanlaw.org/en/labor-union-act/art-33)
- [Act on General Rules for Application of Laws (法の適用に関する通則法)](https://japanlaw.org/en/application-of-laws-act): 3 provisions, among them [Article 10](https://japanlaw.org/en/application-of-laws-act/art-10), [Article 13](https://japanlaw.org/en/application-of-laws-act/art-13), [Article 26](https://japanlaw.org/en/application-of-laws-act/art-26)
- [Road Transport Vehicle Act (道路運送車両法)](https://japanlaw.org/en/road-transport-vehicle-act): 3 provisions, among them [Article 76-7](https://japanlaw.org/en/road-transport-vehicle-act/art-76-7), [Article 76-14](https://japanlaw.org/en/road-transport-vehicle-act/art-76-14), [Article 112](https://japanlaw.org/en/road-transport-vehicle-act/art-112)
- [Banking Act (銀行法)](https://japanlaw.org/en/banking-act): 3 provisions, among them [Article 57-4](https://japanlaw.org/en/banking-act/art-57-4), [Article 65](https://japanlaw.org/en/banking-act/art-65), [Article 69](https://japanlaw.org/en/banking-act/art-69)
- [Act on the Use of Numbers to Identify a Specific Individual in Administrative Procedures (行政手続における特定の個人を識別するための番号の利用等に関する法律)](https://japanlaw.org/en/my-number-act): 2 provisions, among them [Article 39](https://japanlaw.org/en/my-number-act/art-39), [Article 41](https://japanlaw.org/en/my-number-act/art-41)

## Related

- [Legal Affairs Bureau (法務局, ほうむきょく)](https://japanlaw.org/en/concepts/legal-affairs-bureau)
- [Superficies (地上権, ちじょうけん)](https://japanlaw.org/en/concepts/superficies)
- [Right of lease (賃借権, ちんしゃくけん)](https://japanlaw.org/en/concepts/right-of-lease)
- [Statutory lien (先取特権, さきどりとっけん)](https://japanlaw.org/en/concepts/statutory-lien)
- [Assert against (対抗, たいこう)](https://japanlaw.org/en/concepts/assert-against)

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## Sources

- Explanation: Written for this site with AI (claude-opus-5-5, 2026-09-23)
- Where it is used, and how often: Worked out by this site from e-Gov's text
- English names of the laws: Japanese Law Translation, Ministry of Justice (21 records)