2023–24 Japan Rugby League One – Division 1
| 2023–24 Japan Rugby League One – D1 | |
|---|---|
| Countries | Japan |
| Number of teams | 12 |
| Date | 9 December 2023 – 26 May 2024 |
| Champions | Brave Lupus Tokyo |
| Promoted | Mie Heat |
| Relegated | Hanazono Liners |
| Matches played | 106 |
| Attendance | 972,434 (average 9,174 per match) |
| Highest attendance | 56,486 (Saitama Wild Knights vs. Brave Lupus Tokyo, 26 May 2024) |
| Top point scorer | Bryn Gatland (217) |
| Top try scorer | Malo Tuitama (15) |
| Official website | |
| league-one | |
The 2023–24 Japan Rugby League One – Division 1 season is the thirteenth top flight league season played from December 2023 through to May 2024, in the newly rebranded Japan Rugby League One. The competition consisted of twelve teams, including one promoted team from Division 2, the Mie Heat.