| february 27 2019 |  C. Yi | FC Allies 동맹국 |  NK Karlovac | RSD55 670 099 |
| january 30 2019 | J. Stipanović | NK Karlovac |  FC Tigveni Arges (On loan) | (RSD392 756) |
| january 26 2019 |  D. Dūmiņš | NK Karlovac |  Empoli FC | RSD60 554 726 |
| january 25 2019 |  I. Amado | NK Karlovac |  Robbing Hoodies | RSD56 246 401 |
| january 25 2019 |  V. Pärn | NK Karlovac |  S L Giga | RSD75 012 841 |
| january 25 2019 |  P. Wydrzyński | NK Karlovac | Laachi | RSD143 595 510 |
| january 25 2019 |  R. Baggio | NK Karlovac |  TGV speed FC | RSD130 726 262 |
| january 3 2019 |  G. Shevchenko | NK Karlovac | Laachi | RSD32 129 931 |
| december 13 2018 |  A. Schermerhorn | NK Karlovac | Fc Blackart | RSD23 988 442 |
| december 11 2018 |  M. Caspers | NK Karlovac |  G014N14 | RSD8 929 060 |
| december 11 2018 |  D. Bousquila | NK Karlovac | Prince's Quartier | RSD23 812 000 |
| december 9 2018 | D. Herceg | NK Karlovac | None | RSD25 000 000 |
| december 9 2018 |  L. Zangpo |  Phoenix FC | NK Karlovac | RSD259 660 101 |
| december 9 2018 |  A. Bukonin | MFC Nikolaev | NK Karlovac | RSD195 085 661 |
| december 8 2018 |  L. Fu | NK Karlovac |  MXL Luneng Taishan | RSD71 054 061 |
| december 8 2018 |  A. Ben-Ami | NK Karlovac |  FC Bugojno #5 (On loan) | (RSD558 904) |
| december 7 2018 | J. Stipanović | NK Karlovac |  FC Budapest #18 (On loan) | (RSD275 730) |
| december 5 2018 | P. Wydrzyński |  SPL Michael Jackson | NK Karlovac | RSD338 419 621 |
| november 11 2018 | J. Pavlek | NK Karlovac | HŠK ZRINJSKI Mostar | RSD22 402 354 |
| october 22 2018 | M. Adžić | NK Karlovac | Mega | RSD72 866 361 |
| october 21 2018 | G. Shevchenko | Hellas Verona FC | NK Karlovac | RSD134 934 660 |
| october 19 2018 |  J. Chan | NK Karlovac |  ***** (On loan) | (RSD1 856 790) |
| october 16 2018 | A. Ben-Ami | NK Karlovac | Tripoli #4 (On loan) | (RSD401 128) |
| october 15 2018 | V. Pärn | Fc Anomaalia | NK Karlovac | RSD139 455 540 |
| october 14 2018 | V. Lončar | NK Karlovac | None | RSD20 690 167 |
