# 2023 Salzburg Open – Singles

Thiago Monteiro was the defending champion but lost in the quarterfinals to Lukas Neumayer.
Sebastian Ofner won the title after defeating Neumayer 6–3, 6–2 in the final.

## Seeds

* Roberto Carballés Baena (first round)
* Juan Pablo Varillas (second round)
* Sebastian Ofner (champion)
* Thiago Monteiro (quarterfinals)
* Juan Manuel Cerúndolo (semifinals)
* Jurij Rodionov (second round)
* Facundo Bagnis (second round)
* Filip Misolic (quarterfinals)

## 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 | Semifinals | Final | Final | Final | Final |
| Q | Blaž Rola | 4 | 6 | 5 | | | | |
| WC | Lukas Neumayer | 6 | 3 | 7 | | | | |
| WC | Lukas Neumayer | 6 | 3 | 7 | WC | Lukas Neumayer | 3 | 2 |
| | | | | | 3 | Sebastian Ofner | 6 | 6 |
| 3 | Sebastian Ofner | 6 | 6 | | 3 | Sebastian Ofner | 6 | 6 |
| 5 | Juan Manuel Cerúndolo | 0 | 2 | | | | | |

### Top 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 | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | R Carballés Baena | 6$^4$ | 1 | | | | | | | | | | | | | | | |
| Q | B Rola | 7$^7$ | 6 | | Q | B Rola | 6 | 1 | 6 | | | | | | | | | |
| WC | N Oberleitner | 7$^8$ | 1 | 1 | Alt | V Kopřiva | 3 | 6 | 3 | | | | | | | | | |
| Alt | V Kopřiva | 6$^6$ | 6 | 6 | | | | | | Q | B Rola | 6 | 6 | | | | | |
| | N Gombos | 7$^7$ | 3 | 5 | | | | | | 8 | F Misolic | 3 | 3 | | | | | |
| SE | M Guinard | 6$^5$ | 6 | 7 | SE | M Guinard | 5 | 6$^5$ | | | | | | | | | | |
| Q | Sandro Kopp | 5 | 2 | | 8 | F Misolic | 7 | 7$^7$ | | | | | | | | | | |
| 8 | F Misolic | 7 | 6 | | | | | | | | | | | Q | B Rola | 4 | 6 | 5 |
| 4 | T Monteiro | 6 | 3 | 7$^7$ | | | | | | | | | | WC | L Neumayer | 6 | 3 | 7 |
| | O Krutykh | 3 | 6 | 6$^3$ | 4 | T Monteiro | 4 | 6 | 6 | | | | | | | | | |
| | A Ritschard | 6 | 3 | 5 | | M Trungelliti | 6 | 4 | 3 | | | | | | | | | |
| | M Trungelliti | 1 | 6 | 7 | | | | | | 4 | T Monteiro | 4 | 4 | | | | | |
| | S Nagal | 4 | 6$^3$ | | | | | | | WC | L Neumayer | 6 | 6 | | | | | |
| WC | L Neumayer | 6 | 7$^7$ | | WC | L Neumayer | 7$^7$ | 7 | | | | | | | | | | |
| | M Neuchrist | 4 | 7$^7$ | 5 | 7 | F Bagnis | 6$^3$ | 5 | | | | | | | | | | |
| 7 | F Bagnis | 6 | 6$^4$ | 7 | | | | | | | | | | | | | | |

### 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 |
| 6 | J Rodionov | 6 | 2 | 7$^7$ | | | | | | | | | | | | | | |
| Q | V Durasovic | 4 | 6 | 6$^4$ | 6 | J Rodionov | 5 | 4 | | | | | | | | | | |
| | M Pucinelli de Almeida | 0 | 5 | | Alt | N Fatić | 7 | 6 | | | | | | | | | | |
| Alt | N Fatić | 6 | 7 | | | | | | | Alt | N Fatić | 6 | 6$^4$ | 5 | | | | |
| | D Novak | 5 | 7 | 3 | | | | | | 3 | S Ofner | 4 | 7$^7$ | 7 | | | | |
| | L Klein | 7 | 5 | 6 | | L Klein | 4 | 5 | | | | | | | | | | |
| | A Collarini | 4 | 2 | | 3 | S Ofner | 6 | 7 | | | | | | | | | | |
| 3 | S Ofner | 6 | 6 | | | | | | | | | | | | 3 | S Ofner | 6 | 6 |
| 5 | JM Cerúndolo | 6 | 6 | | | | | | | | | | | | 5 | JM Cerúndolo | 0 | 2 |
| Q | M Chazal | 3 | 4 | | 5 | JM Cerúndolo | 6 | 4 | 6 | | | | | | | | | |
| Q | Alex Barrena | 6 | 6 | | Q | A Barrena | 2 | 6 | 1 | | | | | | | | | |
| Q | A Santillan | 3 | 0 | | | | | | | 5 | JM Cerúndolo | 1 | 6 | 6 | | | | |
| | D Džumhur | 5 | 3 | | | | | | | | E Ymer | 6 | 2 | 3 | | | | |
| | E Ymer | 7 | 6 | | | E Ymer | 7$^7$ | 6 | | | | | | | | | | |
| WC | F Delbonis | 4 | 1 | | 2 | JP Varillas | 6$^3$ | 2 | | | | | | | | | | |
| 2 | JP Varillas | 6 | 6 | | | | | | | | | | | | | | | |