| 1. Ronde | 27.02.2021 | Kashima Antlers | - | Shimizu S-Pulse | 1:3 | ||||
| 4. Ronde | 13.03.2021 | Kashima Antlers | - | Sanfrecce Hiroshima | 1:1 | ||||
| 6. Ronde | 21.03.2021 | Kashima Antlers | - | Nagoya Grampus | 0:1 |  |
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| 8. Ronde | 07.04.2021 | Kashima Antlers | - | Kashiwa Reysol | 2:1 | ||||
| 9. Ronde | 11.04.2021 | Hokkaido Consadole Sapporo | - | Kashima Antlers | 2:2 | ||||
| 11. Ronde | 24.04.2021 | Kashima Antlers | - | Vissel Kobe | 1:1 | ||||
| 12. Ronde | 01.05.2021 | Yokohama FC | - | Kashima Antlers | 0:3 | ||||
| 13. Ronde | 09.05.2021 | Kashima Antlers | - | FC Tokyo | 3:0 | ||||
| 21. Ronde | 12.05.2021 | Nagoya Grampus | - | Kashima Antlers | 0:2 | ||||
| 14. Ronde | 15.05.2021 | Kashima Antlers | - | Yokohama F. Marinos | 5:3 | ||||
| 15. Ronde | 22.05.2021 | Sagan Tosu | - | Kashima Antlers | 2:1 | ||||
| 16. Ronde | 26.05.2021 | Kashima Antlers | - | Cerezo Osaka | 1:0 | ||||
| 17. Ronde | 30.05.2021 | Kawasaki Frontale | - | Kashima Antlers | 2:1 | ||||
| 18. Ronde | 20.06.2021 | Kashima Antlers | - | Vegalta Sendai | 1:1 | ||||
| 19. Ronde | 23.06.2021 | Oita Trinita | - | Kashima Antlers | 0:0 | ||||
| 20. Ronde | 27.06.2021 | Kashima Antlers | - | Hokkaido Consadole Sapporo | 4:0 | ||||
| 22. Ronde | 11.07.2021 | Kashiwa Reysol | - | Kashima Antlers | 2:1 |
Japan