| 2025 Busan Open | |
|---|---|
| Date | 14–20 April |
| Edition | 22nd |
| Surface | Hard |
| Location | Busan, South Korea |
| Champions | |
| Singles | |
 Térence Atmane | |
| Doubles | |
 Rio Noguchi / Yuta Shimizu | |
The 2025 Busan Open was a professional tennis tournament played on hardcourts. It was the 22nd edition of the tournament which was part of the 2025 ATP Challenger Tour. It took place in Busan, South Korea between 14 and 20 April 2025.
| Country | Player | Rank1 | Seed |
|---|---|---|---|
 AUS | Adam Walton | 86 | 1 |
 USA | Christopher Eubanks | 110 | 2 |
| USA | Brandon Holt | 114 | 3 |
| AUS | Tristan Schoolkate | 119 | 4 |
| JPN | Yasutaka Uchiyama | 157 | 5 |
| AUS | Li Tu | 174 | 6 |
| JPN | James Trotter | 175 | 7 |
| FRA | Térence Atmane | 177 | 8 |
* 1 Rankings as of 7 April 2025. [1]
The following players received wildcards into the singles main draw:
Gerard Campana Lee Chung Hyeon Kwon Soon-woo The following player received entry into the singles main draw using a protected ranking:
The following players received entry from the qualifying draw:
Térence Atmane def. Adam Walton 6–3, 6–4. Rio Noguchi / Yuta Shimizu def. 
Ray Ho / Matthew Romios 7–6(9–7), 6–4.
