2018 Sparkassen ATP Challenger – Doubles
| Doubles | |
|---|---|
| 2018 Sparkassen ATP Challenger | |
| Champions | .svg.png) Sander Gillé .svg.png) Joran Vliegen | 
| Runners-up |  Purav Raja  Antonio Šančić | 
| Score | 3–6, 6–3, [10–3] | 
Sander Arends and Antonio Šančić were the defending champions but only Šančić chose to defend his title, partnering Purav Raja. Šančić lost in the finals to Sander Gillé and Joran Vliegen.
Gillé and Vliegen won the title after defeating Raja and Šančić 3–6, 6–3, [10–3] in the final.
Seeds
 Luke Bambridge / Luke Bambridge / Jonny O'Mara (semifinals) Jonny O'Mara (semifinals)
 Kevin Krawietz / Kevin Krawietz / Andreas Mies (semifinals) Andreas Mies (semifinals)
 Purav Raja / Purav Raja / Antonio Šančić (final) Antonio Šančić (final)
.svg.png) Sander Gillé / Sander Gillé /.svg.png) Joran Vliegen (champions) Joran Vliegen (champions)
Draw
Key
- Q = Qualifier
- WC = Wild card
- LL = Lucky loser
- Alt = Alternate
- ITF = ITF entry
- PR = Protected ranking
- SR = Special ranking
- SE = Special exempt
- JE = Junior exempt
- JR = Junior Accelerator Programme entrant
- CO = College Accelerator Programme entrant
- NG = Next Gen Accelerator Program entrant
- w/o = Walkover
- r = Retired
- d = Defaulted
| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 |  L Bambridge  J O'Mara | 6 | 66 | [10] | |||||||||||||||||||||||
|  F Martin  J Ocleppo | 3 | 78 | [8] | 1 |  L Bambridge  J O'Mara | w/o | |||||||||||||||||||||
|  S Bolelli  V Galović | 6 | 65 | [7] | WC |  S Napolitano  J Sinner | ||||||||||||||||||||||
| WC |  S Napolitano  J Sinner | 3 | 77 | [10] | 1 |  L Bambridge  J O'Mara | 77 | 63 | [6] | ||||||||||||||||||
| 4 | .svg.png) S Gillé .svg.png) J Vliegen | 77 | 7 | 4 | .svg.png) S Gillé .svg.png) J Vliegen | 64 | 77 | [10] | |||||||||||||||||||
| WC |  Patric Prinoth  Alexander Weis | 65 | 5 | 4 | .svg.png) S Gillé .svg.png) J Vliegen | 6 | 6 | ||||||||||||||||||||
| WC |  R Brancaccio  Luca Giacomini | 5 | 62 |  I Sabanov  M Sabanov | 4 | 4 | |||||||||||||||||||||
|  I Sabanov  M Sabanov | 7 | 77 | 4 | .svg.png) S Gillé .svg.png) J Vliegen | 3 | 6 | [10] | ||||||||||||||||||||
|  L Lacko  S Stakhovsky | 6 | 7 | 3 |  P Raja  A Šančić | 6 | 3 | [3] | ||||||||||||||||||||
|  M Moraing  O Otte | 2 | 5 |  L Lacko  S Stakhovsky | ||||||||||||||||||||||||
|  D Bracciali  A Vavassori | 62 | 3 | 3 |  P Raja  A Šančić | w/o | ||||||||||||||||||||||
| 3 |  P Raja  A Šančić | 77 | 6 | 3 |  P Raja  A Šančić | 7 | 77 | ||||||||||||||||||||
|  T Brkić  A Pavić | 6 | 4 | [6] | 2 |  K Krawietz  A Mies | 5 | 62 | ||||||||||||||||||||
|  D Brown  D Novak | 4 | 6 | [10] |  D Brown  D Novak | 3 | 77 | [4] | ||||||||||||||||||||
|  B Bonzi  Q Halys | 65 | 6 | [6] | 2 |  K Krawietz  A Mies | 6 | 62 | [10] | |||||||||||||||||||
| 2 |  K Krawietz  A Mies | 77 | 3 | [10] | |||||||||||||||||||||||