Transfers
Recent player movements in and out of the squad
| Date | Player | From | To | Type |
|---|---|---|---|---|
| 13.08.2024 | C. Osmanpaşa | — | Kocaelispor | Free |
| 06.08.2024 | M. Caktaš | — | Kocaelispor | N/A |
| 29.07.2024 | Marcão | — | Kocaelispor | Loan |
| 17.07.2024 | A. Sağat | Samsunspor | Kocaelispor | € 277K |
| 16.07.2024 | B. Alıcı | Samsunspor | Kocaelispor | Free |
| 10.07.2024 | Ryan Mendes | Fatih Karagümrük | Kocaelispor | N/A |
| 02.07.2024 | O. Çağlayan | Kasimpasa | Kocaelispor | Free |
| 01.07.2024 | E. Gedik | Goztepe | Kocaelispor | N/A |
| 01.07.2024 | T. Serbest | Goztepe | Kocaelispor | N/A |
| 01.07.2024 | Y. Gültekin | — | Kocaelispor | N/A |
| 01.07.2024 | A. Çiçek | — | Kocaelispor | N/A |
| 01.07.2024 | O. Oztonga | — | Kocaelispor | N/A |
| 30.06.2024 | F. Bektaş | — | Kocaelispor | N/A |
| 30.06.2024 | A. Appindangoyé | — | Kocaelispor | Free |
| 28.06.2024 | F. Gedik | — | Kocaelispor | N/A |
| 24.06.2024 | A. Oğuz | Konyaspor | Kocaelispor | Free |
| 24.06.2024 | F. Özyapı | — | Kocaelispor | N/A |
| 24.06.2024 | Pedrinho | — | Kocaelispor | Free |
| 24.06.2024 | M. Cinan | — | Kocaelispor | N/A |
| 09.02.2024 | Y. Yaman | — | Kocaelispor | Free |
| 09.02.2024 | D. Skhirtladze | — | Kocaelispor | Loan |
| 06.02.2024 | G. Kharaishvili | Ferencvarosi TC | Kocaelispor | N/A |
| 18.01.2024 | D. Aksu | Kasimpasa | Kocaelispor | Free |
| 17.01.2024 | R. Şeydayev | — | Kocaelispor | N/A |
| 11.01.2024 | H. Sarman | — | Kocaelispor | N/A |
| 11.01.2024 | J. Vuković | — | Kocaelispor | Free |
| 01.01.2024 | Ü. Ekşi | — | Kocaelispor | Free |
| 12.09.2023 | G. Beridze | — | Kocaelispor | Free |
| 25.08.2023 | E. Ortakaya | Fenerbahce | Kocaelispor | Loan |
| 24.08.2023 | B. Öksüz | — | Kocaelispor | N/A |
| 17.08.2023 | Douglas Tanque | Samsunspor | Kocaelispor | N/A |
| 16.08.2023 | B. Alıcı | Samsunspor | Kocaelispor | Loan |
| 11.08.2023 | João Amaral | Lech Poznan | Kocaelispor | N/A |
| 11.08.2023 | O. Ceylan | Rizespor | Kocaelispor | N/A |
| 08.08.2023 | Y. Gültekin | Samsunspor | Kocaelispor | Free |
| 01.08.2023 | Y. Abdioğlu | Samsunspor | Kocaelispor | Free |
| 20.07.2023 | Candeias | Alanyaspor | Kocaelispor | Free |
| 10.07.2023 | F. Bektaş | — | Kocaelispor | N/A |
| 10.07.2023 | C. Kouakou | — | Kocaelispor | N/A |
| 04.07.2023 | H. Tekin | Eyüpspor | Kocaelispor | Free |
| 02.07.2023 | O. Atasayar | — | Kocaelispor | Free |
| 01.07.2023 | A. Çiçek | Istanbul Basaksehir | Kocaelispor | Free |
| 01.07.2023 | H. Öztürk | — | Kocaelispor | N/A |
| 01.07.2023 | O. Oztonga | — | Kocaelispor | N/A |
| 15.02.2023 | C. Akgün | — | Kocaelispor | Loan |
| 18.01.2023 | S. Taşdemir | — | Kocaelispor | N/A |
| 17.01.2023 | M. Çölgeçen | — | Kocaelispor | N/A |
| 12.01.2023 | E. Nefiz | — | Kocaelispor | Free |
| 12.01.2023 | A. Kubalas | — | Kocaelispor | Free |
| 25.08.2022 | C. Çelik | — | Kocaelispor | Free |