| 2018 Sibiu Open | ||||
|---|---|---|---|---|
| Date | 17–23 September | |||
| Edition | 7th | |||
| Location | Sibiu, Romania | |||
| Champions | ||||
| Singles | ||||
 Dragoș Dima | ||||
| Doubles | ||||
 Kevin Krawietz / Andreas Mies | ||||
| ||||
The 2018 Sibiu Open was a professional tennis tournament played on clay courts. It was the seventh edition of the tournament which was part of the 2018 ATP Challenger Tour. It took place in Sibiu, Romania between 17 and 23 September 2018.
Singles main-draw entrants
Seeds
| Country | Player | Rank | Seed |
|---|---|---|---|
 SRB
|
Laslo Đere | 86 | 1 |
 AUT
|
Dennis Novak | 133 | 2 |
 POR
|
Pedro Sousa | 144 | 3 |
 ITA
|
Simone Bolelli | 145 | 4 |
 AUS
|
Marc Polmans | 163 | 5 |
| ITA
|
Gianluigi Quinzi | 165 | 6 |
 ESP
|
Pedro Martínez | 184 | 7 |
 CZE
|
Lukáš Rosol | 185 | 8 |
- Rankings are as of 10 September 2018.
Other entrants
The following players received wildcards into the singles main draw:
- Victor Vlad Cornea
Michał Dembek- Dragoș Dima
- Adrian Ungur
The following player received entry into the singles main draw as an alternate:
The following players received entry from the qualifying draw:
- Nicolae Frunză
- Jeremy Jahn
- Fabrizio Ornago
Jelle Sels
The following player received entry as a lucky loser:
Champions
Singles
Main article: 2018 Sibiu Open – Singles- Dragoș Dima def. Jelle Sels 6–3, 6–2.
Doubles
Main article: 2018 Sibiu Open – Doubles- Kevin Krawietz / Andreas Mies def. Tomasz Bednarek / David Pel 6–4, 6–2.