The 2024 Busan Open was a professional tennis tournament played on hard courts. It was the 21st edition of the tournament which was part of the 2024 ATP Challenger Tour. It took place in Busan, South Korea between 8 and 14 April 2024.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
 Australia | James Duckworth | 105 | 1 | |
 Finland | Otto Virtanen | 165 | 2 | |
 Japan | Sho Shimabukuro | 169 | 3 | |
 Italy | Mattia Bellucci | 178 | 4 | |
 China | Bu Yunchaokete | 179 | 5 | |
| Lloyd Harris | 181 | 6 | ||
| Australia | Li Tu | 186 | 7 | |
 Hong Kong | Coleman Wong | 192 | 8 |
The following players received wildcards into the singles main draw:
Kwon Soon-woo Nam Ji-sung Roh Ho-youngThe following players received entry from the qualifying draw:
See main article: 2024 Busan Open – Singles.
Yasutaka Uchiyama def. Hong Seong-chan 7–6(7–4), 6–3.See main article: 2024 Busan Open – Doubles.
Nam Ji-sung def. Chung Yun-seong / Hsu Yu-hsiou 6–2, 6–4.
