# 2023 Tampere Open – Singles

Zsombor Piros was the defending champion but lost in the second round to Henri Squire.
Sumit Nagal won the title after defeating Dalibor Svrčina 6–4, 7–5 in the final.

## Seeds

* Zsombor Piros (second round)
* Cristian Garín (second round, retired)
* Lukáš Klein (quarterfinals)
* Kimmer Coppejans (second round)
* Dalibor Svrčina (final)
* Riccardo Bonadio (second round, retired)
* Sumit Nagal (champion)
* Edoardo Lavagno (first round)

## 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 |
| | Henri Squire | 6$^6$ | 1 | | | | | |
| 5 | Dalibor Svrčina | 7$^8$ | 6 | | | | | |
| 5 | Dalibor Svrčina | 7$^8$ | 6 | | 5 | Dalibor Svrčina | 4 | 5 |
| | | | | | 7 | Sumit Nagal | 6 | 7 |
| | Daniel Rincón | 6 | 3 | 2 | 7 | Sumit Nagal | 6 | 7 |
| 7 | Sumit Nagal | 4 | 6 | 6 | | | | |

### 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 | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | Z Piros | 6 | 7$^7$ | | | | | | | | | | | | | | | |
| | M Echargui | 4 | 6$^5$ | | 1 | Z Piros | 7$^7$ | 4 | 1 | | | | | | | | | |
| | H Squire | 3 | 7 | 6 | | H Squire | 6$^3$ | 6 | 6 | | | | | | | | | |
| Q | T Kodat | 6 | 5 | 0 | | | | | | | H Squire | 7 | 1 | 6 | | | | |
| WC | Patrick Kaukovalta | 3 | 6$^3$ | | | | | | | | D Michalski | 5 | 6 | 3 | | | | |
| | D Michalski | 6 | 7$^7$ | | | D Michalski | 7 | 5 | | | | | | | | | | |
| | M Kaśnikowski | 4 | 0 | | 6 | R Bonadio | 5 | 6$^r$ | | | | | | | | | | |
| 6 | R Bonadio | 6 | 6 | | | | | | | | | | | | | H Squire | 6$^6$ | 1 |
| 3 | L Klein | 6 | 6 | | | | | | | | | | | | 5 | D Svrčina | 7$^8$ | 6 |
| | Elmar Ejupovic | 3 | 4 | | 3 | L Klein | 7 | 6 | | | | | | | | | | |
| | G Fonio | 4 | 6$^6$ | | | V Kopřiva | 5 | 1 | | | | | | | | | | |
| | V Kopřiva | 6 | 7$^8$ | | | | | | | 3 | L Klein | 6$^5$ | 1 | | | | | |
| Q | R Bertola | 6 | 3 | 0 | | | | | | 5 | D Svrčina | 7$^7$ | 6 | | | | | |
| | H Casanova | 4 | 6 | 6 | | H Casanova | 5 | 6$^5$ | | | | | | | | | | |
| | FC Jianu | 6 | 3 | 3 | 5 | D Svrčina | 7 | 7$^7$ | | | | | | | | | | |
| 5 | D Svrčina | 3 | 6 | 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 | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 8 | Edoardo Lavagno | 4 | 3 | | | | | | | | | | | | | | | |
| | N Sánchez Izquierdo | 6 | 6 | | | N Sánchez Izquierdo | 1 | 6$^5$ | | | | | | | | | | |
| Q | D Ajduković | 1 | 7$^8$ | 6 | Q | D Ajduković | 6 | 7$^7$ | | | | | | | | | | |
| Q | V Vacherot | 6 | 6$^6$ | 2 | | | | | | Q | D Ajduković | 3 | 1 | | | | | |
| | D Rincón | 6 | 3 | 7 | | | | | | | D Rincón | 6 | 6 | | | | | |
| Q | L Rottoli | 2 | 6 | 5 | | D Rincón | 7 | 6 | | | | | | | | | | |
| Q | E Kırkın | 6 | 5 | 2 | 4 | K Coppejans | 5 | 4 | | | | | | | | | | |
| 4 | K Coppejans | 3 | 7 | 6 | | | | | | | | | | | D Rincón | 6 | 3 | 2 |
| 7 | S Nagal | 6 | 6 | | | | | | | | | | | 7 | S Nagal | 4 | 6 | 6 |
| WC | J Veselý | 4 | 1 | | 7 | S Nagal | 6 | 6$^2$ | 7$^7$ | | | | | | | | | |
| | JL Reis da Silva | 5 | 6 | 6 | | JL Reis da Silva | 3 | 7$^7$ | 6$^4$ | | | | | | | | | |
| | B Hassan | 7 | 4 | 3 | | | | | | 7 | S Nagal | 6 | 6 | | | | | |
| | M Zekić | 2 | 4 | | | | | | | | A Dougaz | 3 | 3 | | | | | |
| | A Dougaz | 6 | 6 | | | A Dougaz | 6 | 4 | | | | | | | | | | |
| | N Serdarušić | 6 | 3 | 2 | 2/WC | C Garín | 2 | 0$^r$ | | | | | | | | | | |
| 2/WC | C Garín | 1 | 6 | 6 | | | | | | | | | | | | | | |