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Sources & attribution
Where the information comes from, and how we treat other people's listings.
Our policy
- Facts, not content. We record facts (a name, an address, a phone number, a class time) and link to the operator. We do not copy descriptions, photographs, ratings, reviews or page layouts.
- Directories are leads, not sources of record. Commercial directories (for example THE GYMS Okinawa and similar) are used only to discover that a gym exists. We then check it against the operator's own site or a call, and label it if we couldn't.
- We respect robots.txt and site terms. Sites that disallow automated access were not scraped; those gyms are listed from other sources and labelled accordingly.
- Maps. No map-service data is copied or embedded. The “Open in Google Maps” links simply open a search in your own map app. Coordinates come from the Geospatial Information Authority of Japan's public address search; the map tiles are © OpenStreetMap contributors.
- Removal. Owners can ask for correction or removal at any time — see For dojo owners.
Sources used
| Source | Type | Used for | Policy |
|---|---|---|---|
| 沖縄県内道場名簿 (Okinawa dojo roster, FY2019) — Okinawa Karate Information Center / Karate Kaikan https://okic.odks.jp/ | Official roster (prefecture-run) | Dojo names, instructors and addresses for karate/kobudo. Facts only; addresses trimmed to block level. | Government-published list; not re-verified since 2019. |
| 極真会館 沖縄県支部 (Kyokushinkaikan Okinawa Branch) https://www.kyokushinokinawa.com/ | Official organisation site | Dojo addresses, phones, instructors. | Facts only; checked Oct 2026. |
| 新極真会 沖縄支部 (Shinkyokushinkai Okinawa Branch) https://yoshidadojo.jp/ | Official organisation site | Dojo addresses, phones, instructor. | Facts only. |
| 極真館 (Kyokushinkan) — national dojo roster https://kyokushinkan.org/ | Official organisation site | Ginoza dojo listing. | Facts only. |
| 一般財団法人 沖縄県剣道連盟 (Okinawa Kendo Federation) — class and practice lists https://www.okikenren.jp/ | Governing body | Youth, adult, iaido and jodo practice lists with venues, days and phones. | Facts only; checked Oct 2026. |
| 全日本柔道連盟 道場ナビ — 沖縄県 (AJJF Dojo Navi, Okinawa: 13 dojo) https://www.judo.or.jp/dojo-navi/dojo/okinawa | Governing body directory | Judo dojo venues and days/times. | Facts only; checked Oct 2026. Phone numbers are on each dojo's detail page. |
| 沖縄県柔道連盟 (Okinawa Judo Federation) https://judo.spoyell.okinawa/ | Governing body | Federation contact. | Facts only. |
| 合気会 Okinawa dojo directory (aikido.ne.jp) https://www.aikido.ne.jp/dojo/okinawa.html | Organisation directory | Aikido dojo venues and instructors. | Facts only. |
| Prefectural federation / association websites (boxing, sumo, shorinji kempo, kyudo, naginata, wrestling, etc.) — | Governing bodies | Organisation contacts. | Facts only. |
| MCCS Okinawa — Martial Arts program https://www.okinawa.usmc-mccs.org/recreation-fitness/sports/martial-arts | Official programme page | Programme list, contacts, fees, joining process. | Facts only; checked Oct 2026. |
| 沖縄空手会館 (Okinawa Karate Kaikan) — official site https://karatekaikan.jp/en | Official facility site | Facility information. | Facts only. |
| Each gym's or dojo's own website — | Operator site | Addresses, phone numbers, schedules, instructors. | Facts only; links go to the operator. |
| Ageshio Japan — Kobukai dojo page https://ageshiojapan.com/?p=4294 | Operator site | Kobukai details. | Facts only; checked Oct 2026. |
| Stars and Stripes Okinawa — jiu-jitsu feature (Apr 2026) https://okinawa.stripes.com/travel/jiu-jitsu-okinawa.html | News article | Lead only (Leos BJJ Academy). | Lead; no data copied. |
| BJJ Globetrotters — Okinawa gym write-ups (2018–2019) https://www.bjjglobetrotters.com/ | Travel blog | Leads and historical drop-in notes. | Dated; leads only. |
| Third-party gym directories (THE GYMS Okinawa, Itoman Gym network pages, chain locators, etc.) https://thegyms.jp/okinawa/ | Commercial directory | Used only to discover gyms; facts then checked against operator sites where possible. | Leads only; no listing text or ratings copied. Sites that disallow automated access were not scraped. |
| Visitor reviews and travel write-ups — | Reviews | Leads for English-friendly dojo. | Leads only. |
| Public competition results — | Results | Evidence that a group is active. | Leads only. |
| Operators' public social-media pages — | Operator social | Meeting times for small clubs. | Facts only; links go to the operator. |
| Reports from members, visitors and owners (via the suggest-an-edit form or the site maintainers) — | Community | Open/closed status and changes. | Treated as a lead until confirmed against an operator source. |
| Operators' public Facebook pages — | Operator social | Contact links. | Facts only. |