Rayong (Thai Premier League): every transfer in and out, fees paid and earned, squad market value.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2026-07-23 | Patipanchai Phothep | Chainat Hornbill | Rayong | Loan |
| 2026-07-22 | Chananan Pombubpha | Ayutthaya United | Rayong | Free |
| 2026-07-22 | Somkaet Kunmee | Rayong | Rasisalai United | Free |
| 2026-07-22 | Hong-Gyu Yeo | TBC | Rayong | Free |
| 2026-07-22 | Phatcharaphong Prathumma | Nakhonratchasima Mazda FC | Rayong | Free |
| 2026-07-22 | Noppol Kerdkaew | Lamphun Warrior | Rayong | Free |
| 2026-07-22 | Wasusiwakit Phosririt | Rayong | Khonkaen United | Free |
| 2026-07-22 | Chainarong Boonkerd | Rayong | Khonkaen United | Free |
| 2026-07-22 | Player | Khonkaen United | Rayong | Free |
| 2026-07-22 | Thanawat Pimyotha | BG Pathum United | Rayong | Free |
| 2026-07-22 | Saharat Pongsuwan | Rayong | BG Pathum United | Free |
| 2026-07-22 | Ryoma Ito | Rayong | Chonburi FC | Free |
| 2026-07-22 | Stenio Junior | Rayong | Chonburi FC | Free |
| 2026-07-22 | Thanaset Sujarit | Chonburi FC | Rayong | Free |
| 2026-07-22 | Worawut Srisupha | Port FC | Rayong | Free |
| 2026-07-09 | Manuel Ott | Rayong | Terengganu | Free |
| 2026-07-01 | Parkin Harape | Rayong | TBC | Free |
| 2026-07-01 | Weslen Junior | Rayong | TBC | Free |
| 2026-07-01 | Manuel Ott | Rayong | TBC | Free |
| 2026-07-01 | Keven Alemán | Rayong | TBC | Free |