2026 Busan Open
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The 2026 Busan Open was a professional tennis tournament played on hardcourts. It was the 23rd edition of the tournament which was part of the 2026 ATP Challenger Tour. It took place in Busan, South Korea between 13 and 19 April 2026.
Singles main-draw entrants
Seeds
| Country | Player | Rank1 | Seed |
|---|---|---|---|
| AUS | James Duckworth | 86 | 1 |
| AUS | Adam Walton | 111 | 2 |
| JPN | Sho Shimabukuro | 112 | 3 |
| HKG | Coleman Wong | 125 | 4 |
| AUS | Dane Sweeny | 135 | 5 |
| AUS | Alex Bolt | 154 | 6 |
| CHN | Bu Yunchaokete | 159 | 7 |
| SUI | Leandro Riedi | 168 | 8 |
* 1 Rankings as of 6 April 2026.
Other entrants
The following players received wildcards into the singles main draw:
The following player received entry into the singles main draw using a protected ranking:
The following players received entry from the qualifying draw:
- Japan Taro Daniel
- Australia Jake Delaney
- Thailand Kasidit Samrej
- Marat Sharipov
- Japan Renta Tokuda
- Chinese Taipei Wu Tung-lin
The following player received entry as a lucky loser:
Champions
Singles
- vs.