Incheon United Football Club (K League 1): every transfer in and out, fees paid and earned, squad market value, €1.2m spent and €5.1m earned.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2026-08-03 | Young-hun Kang | Incheon Utd. | Gimcheon Sangmu | Loan |
| 2026-08-03 | Kang Young-Hun | Incheon United Football Club | Gimcheon Sangmu Football Club | Loan |
| 2026-07-24 | Tae-wook Jeong | Incheon United Football Club | Uthai Thani | Free |
| 2026-07-09 | Young-whan Kim | Jeonbuk Hyundai Motors | Incheon United Football Club | Loan |
| 2026-07-02 | Park Ho-min | Incheon United Football Club | Sagan Tosu | Free |
| 2026-02-12 | Chi-in Jeong | Daegu FC | Incheon Utd. | — |
| 2026-02-11 | Chung-yong Lee | Ulsan HD | Incheon Utd. | — |
| 2026-02-03 | Morgan Ferrier | AEL Limassol | Incheon Utd. | Free |
| 2026-01-30 | Juan Ibiza | Buriram Utd. | Incheon Utd. | Loan |
| 2026-01-23 | Harrison Delbridge | Incheon Utd. | Melbourne City | Free |
| 2026-01-21 | Tae-wook Jeong | Jeonbuk Hyundai | Incheon Utd. | — |
| 2026-01-16 | Hu-seong Oh | Gwangju FC | Incheon Utd. | Free |
| 2026-01-16 | Jae-min Seo | Seoul E-Land | Incheon Utd. | — |
| 2026-01-16 | Jun-seop Lee | Incheon Utd U18 | Incheon Utd. | — |
| 2026-01-16 | Jung-min Go | Boin HS | Incheon Utd. | Free |
| 2026-01-16 | Junyeop | Hanyang Univ. | Incheon Utd. | Free |
| 2026-01-16 | Min-jun Wang | Tongmyong Univ. | Incheon Utd. | Free |
| 2026-01-16 | Seung-won Yeo | Daejeon Hana C. | Incheon Utd. | Loan |
| 2026-01-16 | Young-hun Kang | Cheonan City | Incheon Utd. | Free |
| 2026-01-16 | Kang Young-Hun | Cheonan City | Incheon United Football Club | Free |