| march 18 2024 |  A. Sahnon | Mainz 05 |  FC Bondowoso (On loan) | (RSD260 660) |
| march 13 2024 | D. Low | Mainz 05 | None | RSD25 000 000 |
| march 13 2024 | A. Karsumaatmaja | Mainz 05 |  FC Ngerulmud #17 (On loan) | (RSD950 106) |
| january 23 2024 |  L. Herakis | Mainz 05 |  Los Palos #5 (On loan) | (RSD274 898) |
| january 23 2024 |  S. Bjerg | Mainz 05 | FC Venilale (On loan) | (RSD182 632) |
| january 22 2024 | M. Yunan | Mainz 05 | None | RSD25 000 000 |
| january 22 2024 | A. Ho | Mainz 05 | None | RSD11 485 735 |
| january 20 2024 | B. Djambek | Mainz 05 | None | RSD25 000 000 |
| january 20 2024 | F. Sahil | Mainz 05 | None | RSD25 000 000 |
| january 19 2024 | S. Suharto | Mainz 05 | None | RSD25 000 000 |
| january 19 2024 |  T. Pal | Mainz 05 | None | RSD25 000 000 |
| december 5 2023 | M. Layar | Mainz 05 |  FC Lorengau (On loan) | (RSD576 906) |
| december 4 2023 |  V. Kana | Mainz 05 |  Zaanse Gaten on Tour (On loan) | (RSD152 647) |
| october 16 2023 | M. Layar | Mainz 05 |  Erfurt #2 (On loan) | (RSD518 084) |
| october 14 2023 | D. Low | Mainz 05 | FC Morehead (On loan) | (RSD361 614) |
| october 11 2023 |  R. Allonen | Mainz 05 |  Atletico Madrid #7 | RSD26 119 425 |
| october 9 2023 |  P. Rossovskiy | Mainz 05 |  Dracena Melilla FC | RSD37 743 430 |
| august 22 2023 | M. Layar | Mainz 05 |  FC Auki #10 (On loan) | (RSD296 103) |
| august 22 2023 | M. Yunan | Mainz 05 | FC Wau #2 (On loan) | (RSD455 516) |
| august 17 2023 | H. Ho | Mainz 05 | None | RSD25 000 000 |
| august 17 2023 | L. Kit | Mainz 05 |  Kingston Wolves FC | RSD29 167 000 |
| august 16 2023 | L. Cabrero | Mainz 05 | FC Kimbe | RSD19 723 400 |
| august 16 2023 | K. Taib | Mainz 05 |  Tupiza FC | RSD47 640 024 |
| june 27 2023 |  Z. Ravančić | Mainz 05 |  FC Funafuti #36 (On loan) | (RSD344 814) |
| june 27 2023 |  B. Júlíusson | Mainz 05 | FC Funafuti #36 (On loan) | (RSD297 442) |
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