# 2023 Gwangju Open – Singles

Zsombor Piros was the defending champion but chose not to defend his title.
Jordan Thompson won the title after defeating Max Purcell 6–3, 6–2 in the final.

## Seeds

* Max Purcell (final)
* Christopher Eubanks (semifinals)
* Jordan Thompson (champion)
* James Duckworth (second round)
* Emilio Gómez (quarterfinals)
* Rinky Hijikata (quarterfinals)
* Aleksandar Vukic (second round)
* Denis Kudla (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 | Final | Final | Final | Final |
| 1 | Max Purcell | 6 | 6 | | | | |
| | Marc Polmans | 0 | 2 | | | | |
| | Marc Polmans | 0 | 2 | 1 | Max Purcell | 3 | 2 |
| | | | | 3 | Jordan Thompson | 6 | 6 |
| 3 | Jordan Thompson | 7$^7$ | 6 | 3 | Jordan Thompson | 6 | 6 |
| 2 | Christopher Eubanks | 6$^3$ | 3 | | | | |

### 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 | M Purcell | 6 | 6 | | | | | | | | | | | | | | |
| | R Berankis | 3 | 2 | | 1 | M Purcell | 6 | 6 | | | | | | | | | |
| Q | L Saville | 6 | 6 | | Q | L Saville | 2 | 2 | | | | | | | | | |
| Q | P Gojowczyk | 3 | 4 | | | | | | | 1 | M Purcell | 6 | 7$^7$ | | | | |
| Q | Dominik Palán | 6 | 6 | | | | | | | 5 | E Gómez | 2 | 6$^3$ | | | | |
| | Y-h Hsu | 2 | 3 | | Q | D Palán | 3 | 2 | | | | | | | | | |
| | A Çelikbilek | 3 | 2 | | 5 | E Gómez | 6 | 6 | | | | | | | | | |
| 5 | E Gómez | 6 | 6 | | | | | | | | | | | 1 | M Purcell | 6 | 6 |
| 4 | J Duckworth | 6 | 6 | | | | | | | | | | | | M Polmans | 0 | 2 |
| Q | O Jasika | 3 | 1 | | 4 | J Duckworth | 3 | 6$^5$ | | | | | | | | | |
| | M Polmans | 2 | 7 | 6 | | M Polmans | 6 | 7$^7$ | | | | | | | | | |
| Alt | Y Shimizu | 6 | 5 | 4 | | | | | | | M Polmans | 6 | 6 | | | | |
| WC | Y-s Chung | 7$^7$ | 6 | | | | | | | Q | J Jung | 4 | 3 | | | | |
| | K Uchida | 6$^4$ | 3 | | WC | Y-s Chung | 6 | 3 | 4 | | | | | | | | |
| Q | J Jung | 6 | 6$^1$ | 6 | Q | J Jung | 3 | 6 | 6 | | | | | | | | |
| 8 | D Kudla | 3 | 7$^7$ | 3 | | | | | | | | | | | | | |

### Bottom 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 |
| 6 | R Hijikata | 6 | 6 | | | | | | | | | | | | | |
| | G Diallo | 2 | 4 | | 6 | R Hijikata | 6 | 7$^7$ | | | | | | | | |
| | T-l Wu | 3 | 2 | | | L Tu | 4 | 6$^3$ | | | | | | | | |
| | L Tu | 6 | 6 | | | | | | 6 | R Hijikata | 4 | 4 | | | | |
| Alt | E Donskoy | 6 | 6 | | | | | | 3 | J Thompson | 6 | 6 | | | | |
| Q | D Masur | 3 | 1 | | Alt | E Donskoy | 2 | 4 | | | | | | | | |
| WC | U-s Park | 1 | 7$^7$ | 0 | 3 | J Thompson | 6 | 6 | | | | | | | | |
| 3 | J Thompson | 6 | 6$^3$ | 6 | | | | | | | | | 3 | J Thompson | 7$^7$ | 6 |
| 7 | A Vukic | 7 | 7$^7$ | | | | | | | | | | 2 | C Eubanks | 6$^3$ | 3 |
| | S Shimabukuro | 5 | 6$^2$ | | 7 | A Vukic | 4 | 6$^4$ | | | | | | | | |
| Alt | Y Bu | 6 | 6 | | Alt | Y Bu | 6 | 7$^7$ | | | | | | | | |
| WC | Shin San-hui | 4 | 1 | | | | | | Alt | Y Bu | 3 | 2 | | | | |
| | C İlkel | 6 | 0 | 1 | | | | | 2 | C Eubanks | 6 | 6 | | | | |
| | B Holt | 3 | 6 | 6 | | B Holt | 2 | 1 | | | | | | | | |
| | L Harris | 6$^3$ | 6 | 4 | 2 | C Eubanks | 6 | 6 | | | | | | | | |
| 2 | C Eubanks | 7$^7$ | 4 | 6 | | | | | | | | | | | | |