# 2023 Svijany Open – Singles

Jiří Lehečka was the defending champion but chose not to defend his title.
Francisco Comesaña won the title after defeating Toby Kodat 6–2, 6–4 in the final.

## Seeds

* Tomáš Macháč (second round, retired)
* Lukáš Klein (second round)
* Dalibor Svrčina (quarterfinals)
* Sumit Nagal (second round)
* Riccardo Bonadio (second round)
* Norbert Gombos (second round)
* Jakub Menšík (first round, retired)
* Francisco Comesaña (champion)

## Draw
### Key

* Q = Qualifier
* WC = Wild card
* LL = Lucky loser
* Alt = Alternate
* SE = Special exempt
* PR = Protected ranking
* ITF = ITF entry
* JE = Junior exempt
* w/o = Walkover
* r = Retired
* d = Defaulted
* SR = Special ranking

### Finals

| Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| | Gerard Campana Lee | 1 | 5 | | | | |
| Q | Toby Kodat | 6 | 7 | | | | |
| Q | Toby Kodat | 6 | 7 | Q | Toby Kodat | 2 | 4 |
| | | | | 8 | Francisco Comesaña | 6 | 6 |
| | Ugo Blanchet | 3 | 0 | 8 | Francisco Comesaña | 6 | 6 |
| 8 | Francisco Comesaña | 6 | 6 | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | T Macháč | 7 | 6 | | | | | | | | | | | | | | |
| Q | Àlex Martí Pujolràs | 5 | 1 | | 1 | T Macháč | 5 | 0$^r$ | | | | | | | | | |
| | N Serdarušić | 4 | 6 | 4 | | G Campana Lee | 7 | 0 | | | | | | | | | |
| | Gerard Campana Lee | 6 | 3 | 6 | | | | | | G Campana Lee | 6 | 6$^5$ | 6 | | | | |
| | H Casanova | 6 | 6 | | | | | | | H Casanova | 3 | 7$^7$ | 4 | | | | |
| | M Zekić | 3 | 4 | | | H Casanova | 6 | 7$^7$ | | | | | | | | | |
| | M Pucinelli de Almeida | 2 | 1 | | 5 | R Bonadio | 4 | 6$^5$ | | | | | | | | | |
| 5 | R Bonadio | 6 | 6 | | | | | | | | | | | | G Campana Lee | 1 | 5 |
| 4 | S Nagal | 6 | 7$^7$ | | | | | | | | | | | Q | T Kodat | 6 | 7 |
| WC | A Paulson | 0 | 6$^5$ | | 4 | S Nagal | 4 | 2 | | | | | | | | | |
| WC | J Veselý | 6 | 3 | 4 | Q | FA Gómez | 6 | 6 | | | | | | | | | |
| Q | FA Gómez | 4 | 6 | 6 | | | | | Q | FA Gómez | 1 | 0 | | | | | |
| Q | T Kodat | 3 | 6 | 6 | | | | | Q | T Kodat | 6 | 6 | | | | | |
| | Timo Stodder | 6 | 3 | 3 | Q | T Kodat | 6 | 6 | | | | | | | | | |
| | G Fonio | 6$^5$ | 4 | | 6 | N Gombos | 4 | 3 | | | | | | | | | |
| 6 | N Gombos | 7$^7$ | 6 | | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 7 | J Menšík | 3 | 0$^r$ | | | | | | | | | | | | | | | |
| | V Kopřiva | 6 | 1 | | | V Kopřiva | 6 | 4 | 2 | | | | | | | | | |
| | U Blanchet | 6 | 6 | | | U Blanchet | 3 | 6 | 6 | | | | | | | | | |
| WC | Hynek Bartoň | 1 | 3 | | | | | | | | U Blanchet | 6 | 6 | | | | | |
| | M Houkes | 5 | 4 | | | | | | | 3 | D Svrčina | 0 | 3 | | | | | |
| | D Michalski | 7 | 6 | | | D Michalski | 5 | 6 | 3 | | | | | | | | | |
| | M Kaśnikowski | 6 | 6$^0$ | 3 | 3 | D Svrčina | 7 | 4 | 6 | | | | | | | | | |
| 3 | D Svrčina | 3 | 7$^7$ | 6 | | | | | | | | | | | | U Blanchet | 3 | 0 |
| 8 | F Comesaña | 6 | 6 | | | | | | | | | | | | 8 | F Comesaña | 6 | 6 |
| Q | Constantin Bittoun Kouzmine | 1 | 3 | | 8 | F Comesaña | 7 | 6 | | | | | | | | | | |
| Q | M Vrbenský | 6 | 2 | 6 | Q | M Vrbenský | 5 | 4 | | | | | | | | | | |
| | V Royer | 4 | 6 | 4 | | | | | | 8 | F Comesaña | 3 | 7 | 6 | | | | |
| Q | Kirill Kivattsev | 5 | 4 | | | | | | | | D Prižmić | 6 | 5 | 2 | | | | |
| | D Prižmić | 7 | 6 | | | D Prižmić | 6 | 7$^8$ | | | | | | | | | | |
| | JL Reis da Silva | 1 | 2 | | 2 | L Klein | 2 | 6$^6$ | | | | | | | | | | |
| 2 | L Klein | 6 | 6 | | | | | | | | | | | | | | | |