The 2018 Marburg Open was a professional tennis tournament played on clay courts. It was the ninth edition of the tournament which was part of the 2018 ATP Challenger Tour. It took place in Marburg, Germany between 2 and 8 July 2018.
| 2018 Marburg Open | |
|---|---|
| Date | 2–8 July |
| Edition | 9th |
| Draw | 32S / 16D |
| Surface | Clay |
| Location | Marburg, Germany |
| Champions | |
| Singles | |
 Juan Ignacio Londero | |
| Doubles | |
 Fabrício Neis /  David Vega Hernández | |
Singles main-draw entrants edit
Seeds edit
| Country | Player | Rank1 | Seed |
|---|---|---|---|
 EST
|
Jürgen Zopp | 107 | 1 |
 GER
|
Yannick Hanfmann | 111 | 2 |
 BOL
|
Hugo Dellien | 120 | 3 |
| BRA
|
Thiago Monteiro | 132 | 4 |
 POR
|
Pedro Sousa | 135 | 5 |
| BRA
|
Rogério Dutra Silva | 136 | 6 |
 RUS
|
Alexey Vatutin | 137 | 7 |
 SUI
|
Henri Laaksonen | 142 | 8 |
- 1 Rankings are as of 25 June 2018.
Other entrants edit
The following players received wildcards into the singles main draw:
The following player received entry into the singles main draw as a special exempt:
The following players received entry from the qualifying draw:
Champions edit
Singles edit
Juan Ignacio Londero def. 
Hugo Dellien 3–6, 7–5, 6–4.
Doubles edit
Fabrício Neis / 
David Vega Hernández def. 
Henri Laaksonen / Luca Margaroli 4–6, 6–4, [10–8].