| Country: | Japan |
| Season: | 2021 |
| Division1: | J1 League |
| Champions1: | Kawasaki Frontale |
| Division2: | J2 League |
| Champions2: | Júbilo Iwata |
| Division3: | J3 League |
| Champions3: | Roasso Kumamoto |
| Division4: | Japan Football League |
| Champions4: | Iwaki FC |
| Division5: | Japanese Regional Leagues |
| Champions5: | Criacao Shinjuku |
| Supercup: | Super Cup |
| Schampions: | Kawasaki Frontale |
| Domestic: | Emperor's Cup |
| Dchampions: | Urawa Red Diamonds |
| Leaguecup: | J.League Cup |
| Lchampions: | Nagoya Grampus |
| Wdivision1: | WE League |
| Wdivision2: | Nadeshiko Division 1 |
| Wchampions2: | Iga FC Kunoichi |
| Wdivision3: | Nadeshiko Division 2 |
| Wchampions3: | JFA Academy Fukushima |
| Wdomestic: | Empress's Cup |
| Prevseason: | 2020 |
| Nextseason: | 2022 |
| Flagicon: | yes |
This article summarizes Japanese football in the 2021 season.
The 2020 AFC U-19 Championship was cancelled after the draw for the group stage was conducted.[1]
| League | Promoted to league | Relegated from league | |
|---|---|---|---|
| J1 League | No relegation | ||
| J2 League | No relegation | ||
| J3 League | No relegation | ||
| Japan Football League | No relegation |
See main article: 2021 J1 League.
See main article: 2021 J2 League.
See main article: 2021 J3 League.
See main article: 2021 Japan Football League.
See main article: 2021 Japanese Regional Leagues.
See main article: 2021–22 WE League season.