| 1. Round | 28/02/2021 | JEF United Chiba | - | Ventforet Kofu | 1:1 | ||||
| 2. Round | 07/03/2021 | Ehime FC | - | JEF United Chiba | 1:1 | ||||
| 3. Round | 14/03/2021 | JEF United Chiba | - | Blaublitz Akita | 0:2 |  |
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| 6. Round | 04/04/2021 | Kyoto Sanga FC | - | JEF United Chiba | 2:1 | |
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| 7. Round | 11/04/2021 | Zweigen Kanazawa | - | JEF United Chiba | 0:1 | ||||
| 8. Round | 17/04/2021 | JEF United Chiba | - | Tochigi SC | 0:0 | ||||
| 9. Round | 21/04/2021 | Mito HollyHock | - | JEF United Chiba | 0:1 | ||||
| 10. Round | 25/04/2021 | JEF United Chiba | - | SC Sagamihara | 0:1 | ||||
| 15. Round | 23/05/2021 | JEF United Chiba | - | FC Machida Zelvia | 1:1 | ||||
| 33. Round | 10/10/2021 | FC Machida Zelvia | - | JEF United Chiba | 0:1 | ||||
| 34. Round | 17/10/2021 | JEF United Chiba | - | RB Omiya Ardija | 2:1 | ||||
| 35. Round | 24/10/2021 | Tokyo Verdy | - | JEF United Chiba | 1:5 | ||||
| 37. Round | 03/11/2021 | Tochigi SC | - | JEF United Chiba | 0:1 | |
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| 38. Round | 07/11/2021 | JEF United Chiba | - | Mito HollyHock | 2:2 | ||||
| 42. Round | 05/12/2021 | Fagiano Okayama | - | JEF United Chiba | 1:3 |
Japan