| Club: | NEC Nijmegen |
| Season: | 2023–24 |
| Manager: | Rogier Meijer |
| Stadium: | Goffertstadion |
| League: | Eredivisie |
| League Result: | 6th |
| Cup1: | KNVB Cup |
| Cup1 Result: | Runners-up |
| League Topscorer: | Magnus Mattsson (11) |
| Season Topscorer: | Magnus Mattsson (13) |
| Pattern La1: | _nec2324h |
| Pattern B1: | _nec2324h |
| Pattern Ra1: | _nec2324h |
| Pattern So1: | _nec2324h |
| Leftarm1: | FFFFFF |
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| Prevseason: | 2022–23 |
| Nextseason: | 2024–25 |
The 2023–24 season was NEC Nijmegen's 84th season in existence and third consecutive in the Dutch top division Eredivisie. They also competed in the KNVB Cup.
| Player | Transferred from | Fee | Date | Source | ||
|---|---|---|---|---|---|---|
 Real Betis | Loan | |||||
 Galatasaray | Loan + €250,000 | |||||
 Troyes | Loan |
| Player | Transferred to | Fee | Date | Source | ||
|---|---|---|---|---|---|---|
| FC Utrecht | [1] | |||||
| Toulouse | [2] | |||||
| Go Ahead Eagles | [3] | |||||
 Hellas Verona | €500,000 | [4] |
See main article: 2023–24 Eredivisie.
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See main article: 2023–24 KNVB Cup.