2022–23 Japan Rugby League One – Division 1
| 2022–23 Japan Rugby League One – D1 | |
|---|---|
| Countries | Japan |
| Number of teams | 12 |
| Date | 17 December 2022 – 20 May 2023 |
| Champions | Spears Tokyo Bay |
| Runners-up | Saitama Wild Knights |
| Promoted | Hanazono Liners Sagamihara DynaBoars |
| Relegated | Green Rockets Tokatsu |
| Matches played | 106 |
| Attendance | 647,420 (average 6,108 per match) |
| Highest attendance | 41,794 (Saitama Wild Knights vs. Spears Tokyo Bay, 20 May 2023) |
| Top point scorer | Bernard Foley (173) |
| Top try scorer | Seiya Ozaki (18) |
| Official website | |
| league-one | |
The 2022–23 Japan Rugby League One – Division 1 season was the twentieth top flight league season played from December 2022 through to May 2023, in the newly rebranded Japan Rugby League One. The competition consisted of twelve teams, including two promoted teams from Division 2, Sagamihara Dynaboars and Hanazono Liners.