| 2. Round | 29/07/2017 | FC Carl Zeiss Jena | - | Fortuna Köln | 0:2 | ||||
| 3. Round | 02/08/2017 | Fortuna Köln | - | VfL Osnabrück | 3:0 | ||||
| 11. Round | 30/09/2017 | SG Sonnenhof Großaspach | - | Fortuna Köln | 1:3 | ||||
| 14. Round | 28/10/2017 | Fortuna Köln | - | Würzburger Kickers | 2:1 | ||||
| 17. Round | 25/11/2017 | Hansa Rostock | - | Fortuna Köln | 5:3 | ||||
| 19. Round | 09/12/2017 | SC Paderborn 07 | - | Fortuna Köln | 3:1 | ||||
| 20. Round | 15/12/2017 | VfR Aalen | - | Fortuna Köln | 1:1 | ||||
| 28. Round | 07/03/2018 | Fortuna Köln | - | Chemnitzer FC | 3:0 | ||||
| 34. Round | 14/04/2018 | Fortuna Köln | - | Preußen Münster | 2:4 | ||||
| 37. Round | 05/05/2018 | FSV Zwickau | - | Fortuna Köln | 1:0 |
Germany
Turkey