| Date: | 31 July – 5 August |
| Edition: | 3rd |
| Surface: | Clay |
| Location: | Lüdenscheid, Germany |
| Champs: | Duje Ajduković |
| Champd: | Luca Margaroli /  Santiago Rodríguez Taverna |
The 2023 Platzmann-Sauerland Open was a professional tennis tournament played on clay courts. It was the third edition of the tournament which was part of the 2023 ATP Challenger Tour. It took place in Lüdenscheid, Germany, between 31 July and 5 August 2023.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
 Hungary | Fábián Marozsán | 87 | 1 | |
 Spain | Pedro Martínez | 130 | 2 | |
 France | Benoît Paire | 131 | 3 | |
 Kazakhstan | Timofey Skatov | 136 | 4 | |
| Maximilian Marterer | 144 | 5 | ||
 Italy | Raúl Brancaccio | 147 | 6 | |
 United Kingdom | Jan Choinski | 151 | 7 | |
 Bolivia, Plurination;al State of | Hugo Dellien | 164 | 8 |
The following players received wildcards into the singles main draw:
The following player received entry into the singles main draw as an alternate:
The following players received entry from the qualifying draw:
Tommaso Compagnucci
Georgii Kravchenko
Hazem Naw
Marcelo ZormannSee main article: 2023 Platzmann-Sauerland Open – Singles.
Hugo Dellien 7–5, 6–4.See main article: 2023 Platzmann-Sauerland Open – Doubles.
Santiago Rodríguez Taverna def. Jakob Schnaitter / Kai Wehnelt 7–6(7–4), 6–4.