# 2023 Canberra Tennis International – Men's singles

Jordan Thompson was the defending champion but chose not to defend his title.
Márton Fucsovics won the title after defeating Leandro Riedi 7–5, 6–4 in the final.

## Seeds

* Márton Fucsovics (champion)
* Emilio Gómez (first round)
* Hugo Gaston (second round)
* Norbert Gombos (quarterfinals)
* Pavel Kotov (first round)
* Francesco Passaro (first round)
* Jurij Rodionov (second round)
* Federico Delbonis (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 |
| 1 | Márton Fucsovics | 6 | 7 | | | | | |
| | Yosuke Watanuki | 2 | 5 | | | | | |
| | Yosuke Watanuki | 2 | 5 | | 1 | Márton Fucsovics | 7 | 6 |
| | | | | | | Leandro Riedi | 5 | 4 |
| | Leandro Riedi | 7$^8$ | 5 | 6 | | Leandro Riedi | 5 | 4 |
| | Jan-Lennard Struff | 6$^6$ | 7 | 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 | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | M Fucsovics | 6 | 6 | | | | | | | | | | | | | | | |
| Q | F Maestrelli | 2 | 3 | | 1 | M Fucsovics | 6 | 3 | 6 | | | | | | | | | |
| | M Arnaldi | 6 | 6 | | | M Arnaldi | 2 | 6 | 1 | | | | | | | | | |
| | A Shevchenko | 4 | 1 | | | | | | | 1 | M Fucsovics | 3 | 6 | 7 | | | | |
| Q | M Krueger | 3 | 4 | | | | | | | WC | M Polmans | 6 | 4 | 5 | | | | |
| WC | M Polmans | 6 | 6 | | WC | M Polmans | 7 | 7$^7$ | | | | | | | | | | |
| WC | D Sweeny | 6 | 6 | | WC | D Sweeny | 5 | 6$^2$ | | | | | | | | | | |
| 5 | P Kotov | 4 | 1 | | | | | | | | | | | | 1 | M Fucsovics | 6 | 7 |
| 4 | N Gombos | 7$^8$ | 6 | | | | | | | | | | | | | Yo Watanuki | 2 | 5 |
| | F Misolic | 6$^6$ | 4 | | 4 | N Gombos | 6 | 7$^7$ | | | | | | | | | | |
| | J Kovalík | 6 | 3 | 7$^7$ | | J Kovalík | 3 | 6$^4$ | | | | | | | | | | |
| PR | B Klahn | 4 | 6 | 6$^1$ | | | | | | 4 | N Gombos | 5 | 4 | | | | | |
| | Yo Watanuki | 4 | 6 | 6 | | | | | | | Yo Watanuki | 7 | 6 | | | | | |
| | L Van Assche | 6 | 4 | 3 | | Yo Watanuki | 6 | 5 | 7$^8$ | | | | | | | | | |
| | G Brouwer | 6 | 6$^7$ | 6$^7$ | 7 | J Rodionov | 4 | 7 | 6$^6$ | | | | | | | | | |
| 7 | J Rodionov | 2 | 7$^9$ | 7$^9$ | | | | | | | | | | | | | | |

### 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 | F Passaro | 3 | 6$^2$ | | | | | | | | | | | | | | | |
| Q | L Broady | 6 | 7$^7$ | | Q | L Broady | 6$^5$ | 6 | 6 | | | | | | | | | |
| | L Klein | 5 | 2 | | | L Nardi | 7$^7$ | 4 | 1 | | | | | | | | | |
| | L Nardi | 7 | 6 | | | | | | | Q | L Broady | 7 | 4 | 4 | | | | |
| | L Riedi | 7$^7$ | 7$^7$ | | | | | | | | L Riedi | 5 | 6 | 6 | | | | |
| | N Jarry | 6$^4$ | 6$^5$ | | | L Riedi | 6 | 6 | | | | | | | | | | |
| | A Vukic | 3 | 6$^5$ | | 3 | H Gaston | 4 | 2 | | | | | | | | | | |
| 3 | H Gaston | 6 | 7$^7$ | | | | | | | | | | | | L Riedi | 7$^8$ | 5 | 6 |
| 8 | F Delbonis | 3 | 6 | 0 | | | | | | | | | | | J-L Struff | 6$^6$ | 7 | 2 |
| | J-L Struff | 6 | 4 | 6 | | J-L Struff | 6 | 6$^3$ | 6 | | | | | | | | | |
| Q | Em Nava | 0 | 4 | | Q | A Müller | 3 | 7$^7$ | 4 | | | | | | | | | |
| Q | A Müller | 6 | 6 | | | | | | | | J-L Struff | 6 | 6 | | | | | |
| WC | J McCabe | 6 | 6 | | | | | | | Q | E Couacaud | 4 | 2 | | | | | |
| | F Agamenone | 3 | 1 | | WC | J McCabe | 1 | 1 | | | | | | | | | | |
| Q | E Couacaud | 7 | 7 | | Q | E Couacaud | 6 | 6 | | | | | | | | | | |
| 2 | E Gómez | 5 | 5 | | | | | | | | | | | | | | | |