# 2023 Guangzhou International Challenger – Singles

Nikoloz Basilashvili was the defending champion but chose not to defend his title.
Térence Atmane won the title after defeating Marc Polmans 4–6, 7–6$^{(9–7)}$, 6–4 in the final.

## Seeds

* Christopher O'Connell (quarterfinals)
* Marc Polmans (final)
* Shang Juncheng (second round, retired)
* Bu Yunchaokete (semifinals)
* Térence Atmane (champion)
* Rio Noguchi (second round)
* Evgeny Donskoy (semifinals)
* Li Tu (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 | Final |
| 5 | Térence Atmane | 6 | 6 | | | | | |
| 4 | Bu Yunchaokete | 3 | 4 | | | | | |
| 4 | Bu Yunchaokete | 3 | 4 | 5 | Térence Atmane | 4 | 7$^9$ | 6 |
| | | | | 2 | Marc Polmans | 6 | 6$^7$ | 4 |
| 7 | Evgeny Donskoy | 3 | 4 | 2 | Marc Polmans | 6 | 6$^7$ | 4 |
| 2 | Marc Polmans | 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 | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | C O'Connell | 7$^8$ | 6 | | | | | | | | | | | | | |
| | Dominik Palán | 6$^6$ | 2 | | 1 | C O'Connell | 6 | 6 | | | | | | | | |
| | F Peliwo | 6$^3$ | 1 | | Q | A Kadhe | 4 | 2 | | | | | | | | |
| Q | A Kadhe | 7$^7$ | 6 | | | | | | 1 | C O'Connell | 5 | 3 | | | | |
| WC | Y Mo | 3 | 3 | | | | | | 5 | T Atmane | 7 | 6 | | | | |
| | Alafia Ayeni | 6 | 6 | | | A Ayeni | 6$^2$ | 6$^1$ | | | | | | | | |
| | L Giustino | 0 | 6 | 3 | 5 | T Atmane | 7$^7$ | 7$^7$ | | | | | | | | |
| 5 | T Atmane | 6 | 4 | 6 | | | | | | | | | 5 | T Atmane | 6 | 6 |
| 4 | Y Bu | 6 | 6 | | | | | | | | | | 4 | Y Bu | 3 | 4 |
| Q | Yin Bang-shuo | 2 | 3 | | 4 | Y Bu | 6 | 6 | | | | | | | | |
| | L Saville | 6 | 2 | 6 | | L Saville | 4 | 0 | | | | | | | | |
| | H Moriya | 3 | 6 | 4 | | | | | 4 | Y Bu | 7 | 6 | | | | |
| Q | Sun Qian | 1 | 2 | | | | | | | D Sweeny | 5 | 3 | | | | |
| | D Sweeny | 6 | 6 | | | D Sweeny | 7$^7$ | 7 | | | | | | | | |
| | E Zhu | 3 | 2 | | 6 | R Noguchi | 6$^1$ | 5 | | | | | | | | |
| 6 | R Noguchi | 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 | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 7 | E Donskoy | 6 | 7$^7$ | | | | | | | | | | | | | | | |
| | A Bellier | 4 | 6$^2$ | | 7 | E Donskoy | 6 | 4 | 6 | | | | | | | | | |
| | A Kachmazov | 6 | 6 | | | A Kachmazov | 2 | 6 | 2 | | | | | | | | | |
| WC | Z Li | 3 | 4 | | | | | | | 7 | E Donskoy | 3 | 7$^7$ | 6 | | | | |
| | A Bolt | 7 | 2 | 6$^6$ | | | | | | | O Jasika | 6 | 6$^5$ | 2 | | | | |
| | O Jasika | 5 | 6 | 7$^8$ | | O Jasika | 6 | 5 | | | | | | | | | | |
| Q | Mikalai Haliak | 7$^9$ | 1 | 2 | 3 | J Shang | 3 | 0$^r$ | | | | | | | | | | |
| 3 | J Shang | 6$^7$ | 6 | 6 | | | | | | | | | | | 7 | E Donskoy | 3 | 4 |
| 8 | L Tu | 6 | 2 | 6 | | | | | | | | | | | 2 | M Polmans | 6 | 6 |
| | N Chappell | 1 | 6 | 2 | 8 | L Tu | 6$^4$ | 6 | 6 | | | | | | | | | |
| WC | Mu Tao | 2 | 6 | 1 | Q | A Wang | 7$^7$ | 2 | 3 | | | | | | | | | |
| Q | A Wang | 6 | 1 | 6 | | | | | | 8 | L Tu | 3 | 4 | | | | | |
| Q | L Castelnuovo | 1 | 2 | | | | | | | 2 | M Polmans | 6 | 6 | | | | | |
| | C Sinclair | 6 | 6 | | | C Sinclair | 4 | 4 | | | | | | | | | | |
| Alt | A Weber | 6$^5$ | 5 | | 2 | M Polmans | 6 | 6 | | | | | | | | | | |
| 2 | M Polmans | 7$^7$ | 7 | | | | | | | | | | | | | | | |