Football association: Japan Football Association
Address: JFA House, Football Ave. Bunkyo-ku TOKYO 113-8311
Affliations: FIFA (1921) & AFC (1954)
Population: 126.80 million
Championship: J1 League
Cup: Emperor's Cup
Tier 1 - J1 League
Tier 2 - J2 League
Tier 3 - J3 League
Tier 4 - Japan Football League
Tier 5 - Japanese Regional Leagues (9 competitions)
Tier 7 - Japanese Prefectural Leagues (46 competitions) + Hokkaido (5 sections)
Tier 8 - Municipal Leagues
References: Wikipedia - Football in Japan index and The Rising Sun News - Regional Leagues (archived).
Main source: RSSSF
(a) Japan - List of Champions
(b) Japan - List of Final Tables
(c) Japan - List of Emperor's Cup Finals
(d) Japan - List of League Cup Winners
(e) Japan - List of Super Cup Finals
Other useful sources:
Football Japan - A website that presents the past and present of Japanese football in both English and Japanese. It includes a Japan Soccer Archive.
J.LEAGUE Data Site - A useful statistical resource on the top tier of Japanese football.
Domestic Competition of Football in Japan (archived) - A tremendous resource on Japanese football provided by RedSwift.
Goal2002.com (archived) - J.League tables and Emperor's Cup results going back to 1993.
The Rising Sun News - An archived resource covering Japanese soccer but previously referenced historical tables are not currently available.
JFLNews - Japanese soccer news website (in Japanese).
JSoccer - Japanese soccer portal.
Nippon-Ganbare - A French website covering Japanese football.
National Football Teams - Japan clubs and international players.
Soccerway - Japan tables and results back to 2012.
Wikimedia Commons - Association football images in Japan.
World Stadiums - Stadiums in Japan.
Current league tables
Historic league tables and results
Appreciation: Full recognition and acknowledgement is made to the work of the contributors to the Rec.Sport.Soccer Statistics Foundation who have catalogued the above tables.