The 2010 J. League Division 2 season was the 39th season of the second-tier club football in Japan and the 12th season since the establishment of J2 League. The season began on March 6 and ended on December 4.
In this season, the number of participating clubs was increased by one, making the total number, nineteen. As opposed to the last two seasons, clubs will play double-round robin, instead of triple-round robin. At the end of the season, the top three clubs were promoted to J. League Division 1 for the 2011 season. Furthermore, there was no relegation to the third-tier Japan Football League.
The following nineteen clubs will play in J. League Division 2 during the 2010 season. Of these clubs, JEF United Chiba, Kashiwa Reysol, and Oita Trinita were relegated from J1 League last year. Also, Giravanz Kitakyushu (formerly known as New Wave Kitakyushu) newly joined from Japan Football League.
Nineteen clubs will play in double round-robin (home and away) format, a total of 36 games each. A club receives 3 points for a win, 1 point for a tie, and 0 points for a loss. The clubs are ranked by points, and tie breakers are, in the following order:
A draw would be conducted, if necessary. However, if two clubs are tied at the first place, both clubs will be declared as the champions. Three top clubs will be promoted to J1 (see below).
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