Transfers
Recent player movements in and out of the squad
| Date | Player | From | To | Type |
|---|---|---|---|---|
| 30.06.2025 | K. Schopp | Sturm Graz | FSV Mainz 05 | Free agent |
| 30.06.2025 | B. Hollerbach | Union Berlin | FSV Mainz 05 | Transfer |
| 29.06.2025 | K. Bos | — | FSV Mainz 05 | Transfer |
| 29.06.2025 | K. Schopp | Sturm Graz | FSV Mainz 05 | Free agent |
| 29.06.2025 | B. Hollerbach | Union Berlin | FSV Mainz 05 | Transfer |
| 29.06.2025 | E. Fernandes | Stade Brestois 29 | FSV Mainz 05 | Return from loan |
| 29.06.2025 | L. Ajorque | FSV Mainz 05 | Stade Brestois 29 | Transfer |
| 29.06.2025 | L. Ajorque | Stade Brestois 29 | FSV Mainz 05 | Return from loan |
| 29.06.2025 | P. Schulz | — | FSV Mainz 05 | Return from loan |
| 29.06.2025 | M. Jenz | FSV Mainz 05 | VfL Wolfsburg | Return from loan |
| 29.06.2025 | B. Bobzien | — | FSV Mainz 05 | Return from loan |
| 29.06.2025 | N. Tauer | — | FSV Mainz 05 | Return from loan |
| 29.06.2025 | M. Richter | Hamburger SV | FSV Mainz 05 | Return from loan |
| 29.06.2025 | T. Krauß | VfL Bochum | FSV Mainz 05 | Return from loan |
| 01.06.2025 | B. Hollerbach | Union Berlin | FSV Mainz 05 | Transfer |
| 03.02.2025 | A. Barkok | FSV Mainz 05 | FC Schalke 04 | — |
| 03.02.2025 | G. Vidović | FSV Mainz 05 | Bayern München | Return from loan |
| 02.02.2025 | G. Vidović | FSV Mainz 05 | Bayern München | Return from loan |
| 02.02.2025 | P. Schulz | FSV Mainz 05 | — | Loan |
| 01.02.2025 | A. Barkok | FSV Mainz 05 | FC Schalke 04 | Transfer |
| 30.01.2025 | T. Krauß | FSV Mainz 05 | VfL Bochum | Loan |
| 28.01.2025 | T. Krauß | Luton | FSV Mainz 05 | Return from loan |
| 28.01.2025 | A. Nordin | Montpellier | FSV Mainz 05 | Transfer |
| 21.01.2025 | L. Maloney | 1. FC Heidenheim | FSV Mainz 05 | Transfer |
| 19.01.2025 | L. Maloney | 1. FC Heidenheim | FSV Mainz 05 | Transfer |
| 02.01.2025 | K. Onisiwo | FSV Mainz 05 | Red Bull Salzburg | Transfer |
| 31.12.2024 | K. Onisiwo | FSV Mainz 05 | Red Bull Salzburg | Free agent |
| 30.08.2024 | E. Fernandes | FSV Mainz 05 | Stade Brestois 29 | Loan |
| 30.08.2024 | G. Vidović | Bayern München | FSV Mainz 05 | Loan |
| 29.08.2024 | Hong Hyun-Seok | Gent | FSV Mainz 05 | € 4M |
| 28.08.2024 | M. Richter | FSV Mainz 05 | Hamburger SV | Loan |
| 28.08.2024 | M. Jenz | VfL Wolfsburg | FSV Mainz 05 | Loan |
| 22.08.2024 | T. Krauß | FSV Mainz 05 | Luton | Loan |
| 14.08.2024 | B. Gruda | FSV Mainz 05 | Brighton | € 30M |
| 14.08.2024 | M. Müller | FSV Mainz 05 | — | N/A |
| 12.08.2024 | Conrad Scholl | FSV Mainz 05 | Ried | Free agent |
| 04.08.2024 | K. Kraft | FSV Mainz 05 | — | Free agent |
| 25.07.2024 | L. Ajorque | FSV Mainz 05 | Stade Brestois 29 | Loan |
| 03.07.2024 | K. Sano | — | FSV Mainz 05 | N/A |
| 02.07.2024 | L. Barreiro | FSV Mainz 05 | Benfica | Free |
| 02.07.2024 | A. Sieb | Bayern München | FSV Mainz 05 | Loan |
| 01.07.2024 | L. Laux | — | FSV Mainz 05 | N/A |
| 01.07.2024 | A. Barkok | Hertha BSC | FSV Mainz 05 | N/A |
| 01.07.2024 | S. van den Berg | FSV Mainz 05 | Liverpool | N/A |
| 01.07.2024 | L. Wilhelm | FSV Mainz 05 | — | Free |
| 01.07.2024 | M. Papela | FSV Mainz 05 | SV Darmstadt 98 | Free |
| 01.07.2024 | D. Schmidt | FSV Mainz 05 | Fortuna Düsseldorf | Free |
| 01.07.2024 | D. Burgzorg | FSV Mainz 05 | — | N/A |
| 01.07.2024 | N. Veratschnig | Wolfsberger AC | FSV Mainz 05 | N/A |
| 01.07.2024 | P. Nebel | — | FSV Mainz 05 | N/A |