Oita Trinita: every transfer in and out, fees paid and earned, squad market value.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2026-01-31 | Shun Ayukawa | Oita Trinita | Sanf. Hiroshima | Free |
| 2026-01-12 | Taro Hamada | Oita Trinita | Fagiano Okayama | — |
| 2026-01-12 | Taiki Amagasa | Oita Trinita | JEF Utd. Chiba | — |
| 2025-01-20 | Tomoya Ando | Oita Trinita | Avispa Fukuoka | — |
| 2025-01-20 | Taiki Amagasa | Thespa Gunma | Oita Trinita | — |
| 2025-01-20 | Shun Nagasawa | Oita Trinita | Kyoto Sanga | Free |
| 2025-01-20 | Masaki Yumiba | Oita Trinita | Shimizu S-Pulse | — |
| 2025-01-20 | Konosuke Nishikawa | Oita Trinita | Mito HollyHock | — |
| 2025-01-20 | Arata Watanabe | Oita Trinita | Mito HollyHock | Free |
| 2024-08-16 | Yoshiaki Arai | Oita Trinita | Machida Zelvia | — |
| 2024-01-08 | Keita Takahata | Oita Trinita | Júbilo Iwata | — |
| 2024-01-08 | Kazuki Fujimoto | Oita Trinita | Machida Zelvia | — |
| 2023-07-07 | Shun Ayukawa | Sanf. Hiroshima | Oita Trinita | Free |
| 2023-02-01 | Taro Hamada | Oita Trinita | Nagano Parceiro | Loan |
| 2023-02-01 | Matheus Teixeira | EC Bahia | Oita Trinita | Loan |
| 2023-01-09 | Yoshiaki Arai | Blaublitz Akita | Oita Trinita | — |
| 2023-01-09 | Tomoya Ando | FC Imabari | Oita Trinita | — |
| 2023-01-09 | Shun Yoshida | Oita Trinita | Urawa Reds | — |
| 2023-01-09 | Kenta Inoue | Oita Trinita | Yokohama F. M. | — |
| 2023-01-09 | Hokuto Shimoda | Oita Trinita | Machida Zelvia | — |