Smoking rules in Japan
Japan’s smoking rules surprise a lot of visitors: you often can’t smoke walking down a city street, but a restaurant might have a smoking room. Since 2020 the indoor rules are national and fairly strict, while the outdoor rules are set street-by-street by each ward. Here’s how it works, from MHLW and municipal sources.
Indoors: the Health Promotion Act (2020)
Since April 1, 2020, the revised Health Promotion Act means “indoor smoking will be prohibited in general” at facilities nationwide, to prevent second-hand smoke. In practice:
- Schools, hospitals, government offices: no smoking on the premises at all — only in a designated outdoor smoking area if one exists.
- Offices, hotels’ common areas, most buildings: smoking only inside a compliant, signposted designated smoking room.
- Excluded: private homes, and hotel/ryokan guest rooms (and train/ship sleeping cabins).
Restaurants, bars & heated tobacco
Restaurants must display their smoking status at the entrance. Smoking inside is only possible if the venue is one of:
- a smoking-only room (no eating/drinking), or a heated-tobacco room (where you can eat and drink while using heated tobacco);
- a small pre-2020 exemption — an existing venue with capital ≤¥50 million and a dining area ≤100 m²; or
- a bar/snack bar whose main purpose is smoking.
Note: anyone under 20 cannot enter a smoking area or room at all, even just to accompany someone.
Outdoors: it depends on the ward
This is the part that catches people out. National law leaves outdoor smoking to each municipality, so rules change as you cross ward boundaries. Two Tokyo examples:
| Ward | Rule | Fine |
|---|---|---|
| Chiyoda | Entire ward is a no-street-smoking district (extended to heated tobacco from Nov 2024) | up to ¥20,000 (currently ¥2,000) |
| Shibuya | No smoking in any public outdoor space except designated spots (covers cigarettes & heated tobacco) | ¥2,000 per violation |
The safe habit: don’t smoke while walking, and use the designated smoking spots you’ll find near stations. Fines are issued on the spot by roving inspectors in some wards.
Age: 20, full stop
The legal smoking (and tobacco-purchase) age is 20. This did not change when Japan lowered the general age of adulthood to 18 in 2022 — MHLW keeps it at 20 because earlier smoking onset carries greater health and dependence risk. Expect age checks when buying tobacco.
Frequently asked questions
Can I smoke inside a restaurant or bar?
Only if it has a compliant designated smoking room, a heated-tobacco room, qualifies as a small pre-2020 exemption, or is a bar whose main purpose is smoking. Every venue must post its smoking status at the entrance — check the sign.
Are heated tobacco products (IQOS, glo, Ploom) treated like cigarettes?
Not entirely indoors — heated tobacco has its own room category where you can eat and drink while smoking, unlike cigarette-only rooms. Outdoors, some wards (e.g. Chiyoda since Nov 2024) now fine heated tobacco the same as cigarettes; it varies by area.
Can I smoke while walking down the street?
It depends entirely on the municipality. National law leaves outdoor rules to local governments, so wards like Chiyoda and Shibuya ban street smoking citywide except at designated spots, with on-the-spot fines around ¥2,000. Always check local signage.
What’s the legal smoking age?
20 — and it did not change when Japan lowered the general age of adulthood to 18 in 2022. Under-20s can’t smoke, buy tobacco, or even enter a designated smoking area.
Does the ban apply to hotel rooms?
No. Individual guest rooms in hotels and ryokans (and sleeping cabins on trains/ships) are excluded from the indoor-smoking restrictions, though hotel common areas are covered. Book a smoking room if you need one.
This is general information from MHLW and municipal sources (2026-07-13). Outdoor rules, fine amounts, and heated-tobacco treatment vary by city/ward and can change — always follow the signage posted at the specific place, or check the local ward’s website. Not legal advice.
Sources
- MHLW — Preventing second-hand smoke: key points of the revised law (retrieved 2026-07-13)
- Tokyo Metropolitan Government — Revised Health Promotion Act & Tokyo Ordinance (English PDF) (retrieved 2026-07-13)
- Japanese Law Translation — Health Promotion Act (English) (retrieved 2026-07-13)
- Chiyoda City — Living-environment ordinance (street-smoking fine) (retrieved 2026-07-13)
- Shibuya City — Smoking rules (designated spots, fine) (retrieved 2026-07-13)