The 2023 Svijany Open was a professional tennis tournament played on clay courts. It was the 10th edition of the tournament which was part of the 2023 ATP Challenger Tour. It took place in Liberec, Czech Republic between 31 July and 6 August 2023.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
 Czech Republic | Tomáš Macháč | 109 | 1 | |
 Slovakia | Lukáš Klein | 153 | 2 | |
| Czech Republic | Dalibor Svrčina | 167 | 3 | |
 India | Sumit Nagal | 178 | 4 | |
 Italy | Riccardo Bonadio | 192 | 5 | |
| Slovakia | Norbert Gombos | 197 | 6 | |
| Czech Republic | Jakub Menšík | 200 | 7 | |
 Argentina | Francisco Comesaña | 238 | 8 |
The following players received wildcards into the singles main draw:
Hynek Bartoň Andrew Paulson Jiří VeselýThe following players received entry from the qualifying draw:
Constantin Bittoun Kouzmine Federico Agustín Gómez
Toby Kodat
Àlex Martí Pujolràs Michael VrbenskýSee main article: 2023 Svijany Open – Singles.
Francisco Comesaña def. Toby Kodat 6–2, 6–4.See main article: 2023 Svijany Open – Doubles.
Petr Nouza / Andrew Paulson def. 
Neil Oberleitner / Tim Sandkaulen 6–3, 6–4.