The 2006 J.League Division 1 season was the 14th season since the establishment of the J.League Division 1. It began on March 4 and ended on December 2.
The following eighteen clubs participated in J.League Division 1 during 2006 season. Of these clubs, Kyoto Purple Sanga, Avispa Fukuoka, and Ventforet Kofu were 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
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.
Updated to match(es) played on December 2, 2006. Source: J. League Division 1 Rules for classification: 1) points; 2) goal difference; 3) number of goals scored. (C) Champions; (R) Relegated Notes: