# 2024 Busan Open – Singles

Aleksandar Vukic was the defending champion but chose not to defend his title.
Yasutaka Uchiyama won the title after defeating Hong Seong-chan 7–6$^{(7–4)}$, 6–3 in the final.

## Seeds

* James Duckworth (semifinals)
* Otto Virtanen (first round)
* Sho Shimabukuro (first round)
* Mattia Bellucci (first round)
* Bu Yunchaokete (first round)
* Lloyd Harris (quarterfinals)
* Li Tu (first round)
* Coleman Wong (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 | Semifinals | Final | Final | Final |
| 1 | James Duckworth | 3 | 6 | 6$^4$ | | | |
| | Yasutaka Uchiyama | 6 | 4 | 7$^7$ | | | |
| | Yasutaka Uchiyama | 6 | 4 | 7$^7$ | Yasutaka Uchiyama | 7$^7$ | 6 |
| | | | | | Hong Seong-chan | 6$^4$ | 3 |
| WC | Kwon Soon-woo | | | | Hong Seong-chan | 6$^4$ | 3 |
| | Hong Seong-chan | w/o | | | | | |

### 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 | Semifinals |
| 1 | J Duckworth | 6 | 6 | | | | | | | | | | | | | | | | |
| WC | Roh Ho-young | 3 | 3 | | 1 | J Duckworth | 4 | 6 | 6 | | | | | | | | | | |
| | A Fery | 6 | 6 | | | A Fery | 6 | 1 | 4 | | | | | | | | | | |
| | Jules Marie | 2 | 1 | | | | | | | 1 | J Duckworth | 7$^7$ | 3 | 6 | | | | | |
| | I Marchenko | 6 | 7$^7$ | | | | | | | | I Marchenko | 6$^5$ | 6 | 3 | | | | | |
| | A Bolt | 1 | 6$^1$ | | | I Marchenko | 6 | 6 | | | | | | | | | | | |
| Q | R Noguchi | 7 | 7 | | Q | R Noguchi | 2 | 3 | | | | | | | | | | | |
| 5 | Y Bu | 5 | 5 | | | | | | | | | | | | 1 | J Duckworth | 3 | 6 | 6$^4$ |
| 3 | S Shimabukuro | 3 | 0 | | | | | | | | | | | | | Y Uchiyama | 6 | 4 | 7$^7$ |
| | Y Uchiyama | 6 | 6 | | | Y Uchiyama | 6 | 4 | 6 | | | | | | | | | | |
| Q | Y Erel | 6 | 4 | 4 | | D Sweeny | 2 | 6 | 1 | | | | | | | | | | |
| | D Sweeny | 4 | 6 | 6 | | | | | | | Y Uchiyama | 4 | 7 | 6 | | | | | |
| | Y-h Hsu | 4 | 3 | | | | | | | Q | P Jubb | 6 | 5 | 3 | | | | | |
| | T-l Wu | 6 | 6 | | | T-l Wu | 4 | 6$^1$ | | | | | | | | | | | |
| Q | P Jubb | 7$^7$ | 6 | | Q | P Jubb | 6 | 7$^7$ | | | | | | | | | | | |
| 7 | L Tu | 6$^3$ | 1 | | | | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals |
| 6 | L Harris | 6 | 6 | | | | | | | | | | | | | |
| | R Berankis | 3 | 1 | | 6 | L Harris | 6 | 7$^7$ | | | | | | | | |
| | P Sekulic | 6 | 6 | | | P Sekulic | 4 | 6$^3$ | | | | | | | | |
| WC | J-s Nam | 1 | 4 | | | | | | 6 | L Harris | 6$^5$ | 5 | | | | |
| Q | A Çelikbilek | 4 | 6 | 3 | | | | | WC | S-w Kwon | 7$^7$ | 7 | | | | |
| | A Kachmazov | 6 | 4 | 6 | | A Kachmazov | 4 | 3 | | | | | | | | |
| WC | S-w Kwon | 6 | 6 | | WC | S-w Kwon | 6 | 6 | | | | | | | | |
| 4 | M Bellucci | 4 | 3 | | | | | | | | | | | WC | S-w Kwon | |
| 8 | C Wong | 6 | 6 | | | | | | | | | | | | S-c Hong | w/o |
| | A Blockx | 3 | 3 | | 8 | C Wong | 7 | 6 | | | | | | | | |
| Q | B Ellis | 6$^1$ | 6 | 7$^7$ | Q | B Ellis | 5 | 2 | | | | | | | | |
| | A Escoffier | 7$^7$ | 3 | 6$^4$ | | | | | 8 | C Wong | 4 | 6 | 2 | | | |
| Q | Y-s Chung | 3 | 2 | | | | | | | S-c Hong | 6 | 3 | 6 | | | |
| | M Lajal | 6 | 6 | | | M Lajal | 4 | 4 | | | | | | | | |
| | S-c Hong | 6 | 6 | | | S-c Hong | 6 | 6 | | | | | | | | |
| 2 | O Virtanen | 2 | 2 | | | | | | | | | | | | | |