J.LEAGUE announced the competition format of the 2021 MEIJI YASUDA J1 LEAGUE. More details will be announced as soon as determined.

Competition Schedule and number of matches Competition format
(20 teams)
Saturday 27 February – Saturday 4 December,
38 rounds/380 matches
Home and Away 
round-robin competition

* There is a possibility of that the schedule may change. 

■Promotion and relegation rules between J1 LEAGUE and J2 LEAGUE
● The bottom four clubs of J1 LEAGUE shall be relegated to J2 LEAGUE and the top two clubs of J2 LEAGUE shall be promoted to J1 LEAGUE
● J1/J2 Play-Offs shall not be held
● J2 clubs that have not received a J.LEAGUE club license cannot be promoted, and will not be replaced by third or lower place club