AI law and policy in Japan
4 instruments relevant to AI in Japan are indexed here, 3 of them binding law, one of which names AI or deepfakes in its title.
Governance readiness 7 of 10 points on the governance readiness index, which records how much machinery exists, not how strict it is. AI Governance Readiness Index This site Our own editorial coding from primary legal sources, not an objective measurement. Every score cites a specific instrument and article. "Readiness" means the machinery exists to govern AI. It is emphatically not a judgement that the resulting rules are good, proportionate, or well enforced. Cite AI Safety Tracker, "AI Governance Readiness Index". https://aisafetytracker.org/methodology/governance-readiness/. Retrieved 23 October 2026.
Statutes
Act of Parliament. Binding on everyone it applies to.
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National Diet of Japan
In full effect from September 2025. It is a promotion statute: it establishes an AI Strategy Headquarters, sets out a basic plan and assigns roles, and creates no prohibitions and no monetary penalties. Japan has an AI Act and does not have AI obligations, and both halves of that matter.
- safety
- government use
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National Diet of Japan
The binding constraint on AI systems handling personal data in Japan, enforced by the Personal Information Protection Commission. Where the AI Act creates no duties, this one does.
- privacy
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National Diet of Japan
One of the most permissive text and data mining provisions in the world: use of a work for machine learning is generally permitted where it is not for enjoying the expression itself. The Agency for Cultural Affairs has since narrowed how widely it reads that, which is what the linked guidance covers.
- copyright
Voluntary standards
Guidance with no legal force. Compliance is a choice.
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Ministry of Economy, Trade and Industry, and Ministry of Internal Affairs and Communications
The practical governance expectation on Japanese developers and deployers, covering the whole lifecycle. Voluntary, and in a jurisdiction with a penalty-free AI Act it does most of the work.
- safety
- transparency
About this index
Compiled here from primary instruments and licensed MIT.
3 of the 4 instruments here are binding law, and exactly one of those names AI: the Act on Promotion of Research, Development and Utilization of AI-Related Technologies. The remainder apply to AI without naming it, so a keyword search of the statute book does not find them.
Topics covered: copyright, government use, privacy, safety, transparency. A build check probes every citation on this page, because a link that returns a 404 looks like evidence and is not.
This is not legal advice. It is not a compliance checklist and it is not exhaustive. Commencement dates, proposals and enforcement positions move; the review date is on every record. If something here is wrong, say so and it gets fixed and listed rather than quietly patched.