| Club: | İstanbulspor |
| Season: | 2023–24 |
| Manager: | Fatih Tekke (until 25 September) Olcay Demir (from 26 September to 10 October) Hakan Yakin (from 16 October to 19 January) Osman Zeki Korkmaz (from 19 January) |
| Stadium: | Esenyurt Necmi Kadıoğlu Stadium |
| League: | Süper Lig |
| League Result: | 20th (relegated) |
| Cup1: | Turkish Cup |
| Cup1 Result: | Third round |
| League Topscorer: | Florian Loshaj (5) |
| Season Topscorer: | Florian Loshaj (5) |
| Prevseason: | 2022–23 |
| Nextseason: | 2024–25 |
The 2023–24 season was İstanbulspor's 98th season in existence and second consecutive in the Süper Lig. They also competed in the Turkish Cup.
| Player | Transferred from | Fee | Date | Source | ||
|---|---|---|---|---|---|---|
| KF Egnatia | €400,000 | |||||
| Al-Ahli | Free | |||||
| Unattached | Free | |||||
| OFI | Free |
| Player | Transferred to | Fee | Date | Source | ||
|---|---|---|---|---|---|---|
| FC U Craiova | Free | |||||
| Lyngby BK | Free | |||||
| Konyaspor | €150,000 |
See main article: 2023–24 Süper Lig.
The league fixtures were unveiled on 19 July 2023.[2]
See main article: 2023–24 Turkish Cup.