Suwon FC (K League 1): every transfer in and out, fees paid and earned, squad market value, €222k spent and €2.2m earned.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2026-07-09 | Koki Tsukagawa | PT Prachuap FC | Suwon FC | Free |
| 2026-03-26 | San Choi | Suwon FC | Jincheon HR | Free |
| 2026-03-24 | Chi-ung Choi | Suwon FC | Yongin City | Loan |
| 2026-03-10 | Yun-oh Lee | Seoul E. | Suwon FC | Free |
| 2026-03-10 | Jae-yun Hwang | Suwon FC | Seoul E. | Free |
| 2026-02-23 | Martin Hoel Andersen | Skeid | Suwon FC | Free |
| 2026-02-13 | Pablo Sabbag | Suwon FC | Al Ahli Tripoli | Free |
| 2026-02-04 | Jae-sung Kim | Suwon FC | Jungnang Chorus Mustang | Loan |
| 2026-01-29 | Matheus Frizzo | Tombense | Suwon FC | Free |
| 2026-01-28 | Derlan | Oita Trinita | Suwon FC | Free |
| 2026-01-23 | Luan Dias | Suwon FC | Gimpo | Free |
| 2026-01-19 | Jun-ho Hong | Jeju United | Suwon FC | Free |
| 2026-01-16 | Han-been Yang | Seongnam | Suwon FC | Free |
| 2026-01-16 | Jin-woo Jo | Daegu FC | Suwon FC | Free |
| 2026-01-16 | Gi-yun Choi | Busan I'Park | Suwon FC | Free |
| 2026-01-16 | Ji-hun Kim | Gimpo | Suwon FC | Free |
| 2026-01-16 | Yun-gu Gang | Incheon United Football Club | Suwon FC | Free |
| 2026-01-16 | Bit-garam Yoon | Suwon FC | Bucheon FC | Free |
| 2026-01-16 | Joon-suk Lee | Suwon FC | Paju Citizen | Free |
| 2026-01-16 | Bit-garam Yoon | Suwon FC | Bucheon 1995 | Free |