The 2008 J.League Division 1 season was the 44th season of the top-flight club football in Japan and the 16th season since the establishment of J.League Division 1. The season began on March 8 and ended on December 6.
A total of eighteen clubs participated in double round-robin format. Starting this season, top three clubs received automatic qualification to the following years' AFC Champions League. The bottom two clubs were relegated to J.League Division 2 by default, while 16th-placed club had to defend their spot in the top-flight in the pro/rele series.
The following 18 clubs participated in J.League Division 1 during 2008 season. Of these clubs, Consadole Sapporo, Tokyo Verdy, and Kyoto Purple Sanga are newly promoted clubs.
Eighteen clubs will play in double round-robin (home and away) format, a total of 34 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:
Goal differential
Goals scored
Head-to-head results
Disciplinary points
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. The bottom two clubs will be relegated to J2, while the 16th placed club plays a two-legged promotion/relegation Series. The champions of this season qualifies to the AFC Champions League and one to three more clubs may also qualify.
Changes from Previous Year
Introduction of Disciplinary points for tie breaker (2008–)
Updated to match(es) played on December 6, 2008. Source: J. League Division 1 Rules for classification: 1) points; 2) goal difference; 3) number of goals scored. (C) Champions; (O) Play-off winners; (R) Relegated Notes: