5 Things Tourists Should Know: What’s Actually Illegal in Japan

Japan is known for being safe and orderly, but many travelers are unaware of local laws that differ from those in their home countries. Here are five things that are surprisingly illegal in Japan—even though they may seem harmless elsewhere.

1. Using Online Casinos

Even if the casino is hosted overseas, accessing and playing online casino games while in Japan is considered illegal gambling under Japanese law. Some users have even been arrested for it.

2. Being Drunk and Disorderly in Public

While drinking alcohol in public is technically legal in many areas, causing a disturbance—like yelling or being visibly intoxicated in public spaces (parks, trains, streets)—can violate local laws and result in police intervention.

3. Bringing in CBD or Foreign Medicines

Certain medications and CBD products that are legal in other countries are classified as controlled substances in Japan. Carrying or using them without proper authorization can lead to confiscation or arrest.

4. Flying Drones Without Permission

Japan has strict regulations on drone use. Flying drones in urban areas or near tourist spots without government approval is prohibited and can result in fines or legal action.

5. Smoking in Non-Smoking Zones or While Walking

In many cities like Tokyo and Osaka, street smoking and smoking while walking are banned. Designated smoking areas must be used, and violations can lead to fines or warnings from officials.

Respecting local laws and customs will help ensure a safe and enjoyable trip to Japan!