| 2023 Saturn Oil Open | |
|---|---|
| Date | 29 May – 4 June |
| Edition | 2nd |
| Surface | Clay |
| Location | Troisdorf, Germany |
| Champions | |
| Singles | |
 Ivan Gakhov | |
| Doubles | |
 Íñigo Cervantes / Oriol Roca Batalla | |
The 2023 Saturn Oil Open was a professional tennis tournament that was played on clay courts. It was the second edition of the tournament which was part of the 2023 ATP Challenger Tour. It took place in Troisdorf, Germany between 29 May and 4 June 2023.
| Country | Player | Rank1 | Seed |
|---|---|---|---|
| Pavel Kotov | 121 | 1 | |
 HUN | Zsombor Piros | 125 | 2 |
 BEL | |||
 SVK | Lukáš Klein | 133 | 4 |
 AUT | Filip Misolic | 142 | 5 |
| SVK | Jozef Kovalík | 143 | 6 |
 JPN | Kaichi Uchida | 154 | 7 |
 NED | Jelle Sels | 169 | 8 |
The following players received wildcards into the singles main draw:
The following players received entry into the singles main draw as alternates:
The following players received entry from the qualifying draw:
Térence Atmane
Nick Hardt 
Benjamin Hassan 
José Pereira Oriol Roca Batalla 
Robert Strombachs The following players received entry as lucky losers:
Constantin Bittoun Kouzmine
Karl Friberg 
Sumit Nagal 
Renzo Olivo Ivan Gakhov def. 
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