Japan landmark
Updated for 2025

Is Weed Legal in Japan?

Comprehensive legal status information for Weed in Japan

124.5M people
$33,836 GDP/capita
HDI 0.920
2.6% unemployment

Completely illegal with strict enforcement

Quick Facts
Recreational
illegal
Medical
illegal
Possession
All possession illegal
Buying/Selling
All sale illegal
Tourists
Laws apply to all visitors

Detailed Information

Current Legal Status

Cannabis is currently illegal in Japan. The prohibition of cannabis dates back to the Cannabis Control Law of 1948, which was enacted under the influence of U.S. policies following World War II. This law made the cultivation, possession, and distribution of cannabis illegal, and it has remained largely unchanged since then. Over the decades, public perception has been influenced by various campaigns against drug use, reinforcing the stigma surrounding cannabis.

Possession Penalties

Criminal penalties for possession of cannabis in Japan are severe. Individuals caught with any amount of cannabis can face up to five years in prison, and fines can reach up to 2 million yen (approximately $18,000). For smaller amounts, such as possession of less than 1 gram, penalties may still include imprisonment for up to three years and fines of up to 1 million yen (approximately $9,000).

First-time offenders may receive lighter sentences, but repeat offenders face significantly harsher penalties, which can include longer prison terms and larger fines. The legal system tends to take a strict stance against drug-related offenses, and even minor infractions can lead to serious consequences.

Cultivation & Distribution

The penalties for cultivating or distributing cannabis in Japan are particularly severe. Cultivating even a small number of plants can result in a prison sentence of up to seven years, along with fines that can exceed 3 million yen (approximately $27,000). Distribution or sale of cannabis can lead to imprisonment for up to 10 years, and those involved in trafficking can face even longer sentences. The Japanese government maintains a zero-tolerance policy towards cannabis cultivation and distribution, reflecting the broader societal view against drug use.

Enforcement

Cannabis laws in Japan are strictly enforced, with law enforcement agencies prioritizing drug-related offenses. Police conduct regular inspections and raids, particularly in urban areas where drug use is suspected to be more prevalent. The court system generally supports stringent penalties for drug offenses, and there is a low tolerance for leniency in cases involving cannabis. Convictions for cannabis-related offenses can lead to a criminal record, which may have long-lasting effects on an individual's life.

Medical Exceptions

As of now, there are no legal medical exceptions for cannabis use in Japan. The country has not recognized the therapeutic benefits of cannabis, and there are no provisions for medical cannabis or CBD products, even those with negligible THC content. This lack of medical allowances has drawn criticism from advocates who argue for the potential benefits of cannabis in treating various health conditions.

Reform Efforts

There have been some movements advocating for the decriminalization or legalization of cannabis in Japan, particularly among younger generations. Public opinion polls indicate a growing acceptance of cannabis, with some surveys showing that approximately 30% of respondents support legalization for recreational use. However, these movements face significant opposition from conservative factions within the government and society, which continue to view cannabis use as a serious social issue. Efforts to reform cannabis laws have not yet gained substantial traction in the legislative process.

Travel Warning

Tourists traveling to Japan should exercise extreme caution regarding cannabis. The country has a strict zero-tolerance policy, and possession of even trace amounts can lead to severe legal consequences, including arrest and deportation. Visitors should be aware that drug laws are rigorously enforced, and ignorance of the law is not typically accepted as a defense. It is advisable for travelers to refrain from any cannabis-related activities while in Japan to avoid legal issues.

Comparison to Neighbors

  • Compared to neighboring countries, Japan's cannabis laws are among the strictest. For instance, South Korea has also maintained strict cannabis laws but has recently begun discussions about potential medical use, while Thailand has legalized medical cannabis, reflecting a significant shift in drug policy in the region.
  • Cross-border risks are notable, especially for travelers coming from countries with more lenient cannabis laws. Individuals carrying cannabis products from places where it is legal may face severe penalties upon entering Japan, as customs and immigration checks are thorough and strict regarding drug enforcement.

Recent News

Latest updates from trusted news sources

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Policy History

Track the evolution of cannabis policies in Japan over time.

January 1, 2025
Current Status
Status changed to:
Illegal

Completely illegal with strict enforcement

Sources
January 1, 2025
Current Status
Status changed to:
Illegal

Completely illegal with strict enforcement

Sources
January 1, 2025
Current Status
Status changed to:
Illegal

Completely illegal with strict enforcement

Sources
January 1, 2025
Current Status
Status changed to:
Illegal

Completely illegal with strict enforcement

Sources
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Disclaimer

This guide is for informational purposes only. We do not encourage or facilitate illegal activity. Laws and enforcement vary by location — always follow local regulations. Consult with local authorities or legal professionals for the most current and accurate information regarding Weed in Japan.

Last updated: December 24, 2025