The 2006 J.League Division 1 season was the 14th season since the establishment of the J.League. It began on March 4 and ended on December 2.
The 2005 season was the 13th season since the establishment of J.League. It began on March 5 and ended on December 3, followed by promotion/relegation series matches on December 7 and 10.
The 2007 J.League Division 1 season was the 15th season since the establishment of the J.League. The season began on March 3 and ended on December 1.
The 2009 Nagoya Grampus season is Nagoya Grampus's 17th season in the J. League Division 1 and 28th overall in the Japanese top flight. They competed in the 2009 J. League Cup, 2009 Emperor's Cup, and the 2009 AFC Champions League.
The 2008 Nagoya Grampus season was Nagoya Grampus' 16th season in the J. League Division 1 and 27th overall in the Japanese top flight. They also participated in the 2008 J. League Cup, being knocked out at the Semifinal stage by Oita Trinita, and the 2008 Emperor's Cup getting knocked out at the Quarterfinal stage by Gamba Osaka.
The 2012 Avispa Fukuoka season sees Avispa Fukuoka return to J.League Division 2 after spending 2011 in J1. This is their non-consecutive 13th season in the second tier since 1991. Avispa Fukuoka are also competing in the 2012 Emperor's Cup.
The 2013 Kashiwa Reysol season was Kashiwa Reysol's 3rd season back in the J.League Division 1 since promotion in 2010, making it their 41st season in the top flight overall. They finished 10th in the league, won the J.League Cup and were knocked out of the Emperor's Cup and AFC Champions League at the fourth round Semifinals respectively.
The 2021 season was the 49th season in the existence of Júbilo Iwata and the club's second consecutive season in the second division of Japanese football.
The 2023 J2 League, also known as the 2023 Meiji Yasuda J2 League for sponsorship reasons, will be the 25th season of the J2 League, the second-tier Japanese professional league for association football clubs, since its establishment in 1999.
The 2023 season is Júbilo Iwata's 51st season in existence and the club's first season back in the second division of Japanese football. In addition to the domestic league, Júbilo Iwata will participate in this season's edition of the Emperor's Cup.
The 2023 season is Tokushima Vortis's 68th season in existence and the club's second consecutive season in the second division of Japanese football. In addition to the domestic league, Tokushima Vortis will participate in this season's edition of the Emperor's Cup.
The 2023 season is Zweigen Kanazawa's 67th season in existence and the club's ninth consecutive season in the second division of Japanese football. In addition to the domestic league, Zweigen Kanazawa will participate in this season's edition of the Emperor's Cup.
The 2023 season is Mito HollyHock's 29th season in existence and the club's 23rd consecutive season in the second division of Japanese football. In addition to the domestic league, Mito HollyHock will participate in this season's edition of the Emperor's Cup.
The 2023 season is Renofa Yamaguchi's 74th season in existence and the club's eighth consecutive season in the second division of Japanese football. In addition to the domestic league, Renofa Yamaguchi will participate in this season's edition of the Emperor's Cup.
The 2023 season is V-Varen Nagasaki's 19th season in existence and the club's fifth consecutive season in the second division of Japanese football. In addition to the domestic league, V-Varen Nagasaki will participate in this season's edition of the Emperor's Cup.
The 2023 season is Vegalta Sendai's 35th season in existence and the club's second consecutive season in the second division of Japanese football. In addition to the domestic league, Vegalta Sendai will participate in this season's edition of the Emperor's Cup.
The 2023 season is Thespakusatsu Gunma's 28th season in existence and the club's fourth consecutive season in the second division of Japanese football. In addition to the domestic league, Thespakusatsu Gunma will participate in this season's edition of the Emperor's Cup.
The 2023 season is FC Machida Zelvia's 34th season in existence and the club's eighth consecutive season in the second division of Japanese football. In addition to the domestic league, FC Machida Zelvia will participate in this season's edition of the Emperor's Cup.
The 2023 season is Roasso Kumamoto's 54th season in existence and the club's second consecutive season in the second division of Japanese football. In addition to the domestic league, Roasso Kumamoto will participate in this season's edition of the Emperor's Cup.
The 2023 season is Shimizu S-Pulse's 32nd season in existence and the club's first season back in the second division of Japanese football since 2016. In addition to the domestic league, Shimizu S-Pulse will participate in this season's edition of the Emperor's Cup and the J.League Cup.