# 2023 Tunis Open – Singles

Roberto Carballés Baena was the defending champion but chose not to defend his title.
Sho Shimabukuro won the title after defeating Geoffrey Blancaneaux 6–4, 6–4 in the final.

## Seeds

* Borna Gojo (semifinals)
* Liam Broady (first round)
* Tomás Barrios Vera (second round)
* Maximilian Marterer (quarterfinals, retired)
* Thiago Agustín Tirante (second round)
* João Sousa (first round)
* Mattia Bellucci (first round)
* Damir Džumhur (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 | Final | Final | Final | Final |
| 1 | Borna Gojo | 2 | 3 | | | | |
| | Geoffrey Blancaneaux | 6 | 6 | | | | |
| | Geoffrey Blancaneaux | 6 | 6 | | Geoffrey Blancaneaux | 4 | 4 |
| | | | | Q | Sho Shimabukuro | 6 | 6 |
| Q | Sho Shimabukuro | 6 | 6 | Q | Sho Shimabukuro | 6 | 6 |
| Q | Jesper de Jong | 3 | 1 | | | | |

### 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 |
| 1 | B Gojo | 6 | 7$^7$ | | | | | | | | | | | | | | |
| LL | N Mejía | 4 | 6$^4$ | | 1 | B Gojo | 6 | 6 | | | | | | | | | |
| Q | D Wenger | 2 | 2 | | | R Noguchi | 2 | 1 | | | | | | | | | |
| | R Noguchi | 6 | 6 | | | | | | | 1 | B Gojo | 6 | 6 | | | | |
| SE | J Menšík | 6 | 6 | | | | | | | SE | J Menšík | 2 | 0 | | | | |
| | L Lokoli | 4 | 2 | | SE | J Menšík | 6$^5$ | 6 | 7 | | | | | | | | |
| | ND Ionel | 7$^7$ | 6 | | | ND Ionel | 7$^7$ | 4 | 5 | | | | | | | | |
| 7 | M Bellucci | 6$^5$ | 2 | | | | | | | | | | | 1 | B Gojo | 2 | 3 |
| 4 | M Marterer | 6 | 6 | | | | | | | | | | | | G Blancaneaux | 6 | 6 |
| | A Tabilo | 3 | 2 | | 4 | M Marterer | 6 | 6 | | | | | | | | | |
| | J De Loore | 6 | 5 | 3 | Q | D Rincón | 3 | 4 | | | | | | | | | |
| Q | D Rincón | 4 | 7 | 6 | | | | | | 4 | M Marterer | 2$^r$ | | | | | |
| | K Coppejans | 6 | 6 | | | | | | | | G Blancaneaux | 5 | | | | | |
| | F Maestrelli | 3 | 4 | | | K Coppejans | 2 | 6 | 3 | | | | | | | | |
| | G Blancaneaux | 6 | 5 | 6 | | G Blancaneaux | 6 | 2 | 6 | | | | | | | | |
| 6 | J Sousa | 3 | 7 | 4 | | | | | | | | | | | | | |

### 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 |
| 5 | TA Tirante | 6 | 6 | | | | | | | | | | | | | | | |
| Q | S Mochizuki | 4 | 4 | | 5 | TA Tirante | 4 | 3 | | | | | | | | | | |
| WC | M Jaziri | 3 | 1 | | WC | A Dougaz | 6 | 6 | | | | | | | | | | |
| WC | A Dougaz | 6 | 6 | | | | | | | WC | A Dougaz | 6 | 5 | 3 | | | | |
| | GA Olivieri | 7$^7$ | 3 | 4 | | | | | | Q | S Shimabukuro | 2 | 7 | 6 | | | | |
| Q | S Shimabukuro | 6$^2$ | 6 | 6 | Q | S Shimabukuro | 3 | 6 | 6 | | | | | | | | | |
| | M Gigante | 1 | 0$^r$ | | 3 | T Barrios Vera | 6 | 3 | 2 | | | | | | | | | |
| 3 | T Barrios Vera | 6 | 1 | | | | | | | | | | | | Q | S Shimabukuro | 6 | 6 |
| 8 | D Džumhur | 1 | 6 | 6 | | | | | | | | | | | Q | J de Jong | 3 | 1 |
| WC | A Ouakaa | 6 | 0 | 2 | 8 | D Džumhur | 6 | 6 | | | | | | | | | | |
| | D Novak | 2 | 6 | 7$^7$ | | D Novak | 4 | 0 | | | | | | | | | | |
| | G-A Bailly | 6 | 3 | 6$^3$ | | | | | | 8 | D Džumhur | 5 | 6 | 3 | | | | |
| Q | J de Jong | 7$^7$ | 2 | | | | | | | Q | J de Jong | 7 | 4 | 6 | | | | |
| Alt | P Cuevas | 6$^0$ | 1$^r$ | | Q | J de Jong | 6 | 6 | | | | | | | | | | |
| Q | Alexander Weis | 6 | 5 | 6 | Q | A Weis | 4 | 3 | | | | | | | | | | |
| 2 | L Broady | 0 | 7 | 3 | | | | | | | | | | | | | | |