| 2026 Yokkaichi Challenger | |
|---|---|
| Date | 23 – 29 March |
| Edition | 5th |
| Location | Yokkaichi, Japan |
| 2024 Champions | |
| Singles | |
 Rei Sakamoto | |
| Doubles | |
 Thomas Fancutt /  Jakub Paul | |
The 2026 Yokkaichi Challenger was a professional tennis tournament played on hard courts. It was the 5th edition of the tournament which was part of the 2026 ATP Challenger Tour. It took place in Yokkaichi, Japan between 23 and 29 March 2026.
| Country | Player | Rank1 | Seed |
|---|---|---|---|
| JPN | Sho Shimabukuro | 110 | 1 |
 DEN | August Holmgren | 197 | 2 |
 FRA | Dan Added | 204 | 3 |
 TPE | Hsu Yu-hsiou | 215 | 4 |
 CHN | Zhou Yi | 221 | 5 |
| JPN | Kaichi Uchida | 236 | 6 |
| JPN | Rio Noguchi | 245 | 7 |
| AUS | James McCabe | 246 | 8 |
The following players received wildcards into the singles main draw:
Naoya Honda Kokoro Isomura Sho Shimabukuro The following player received entry into the singles main draw using a protected ranking:
The following player received entry into the singles main draw through the Junior Accelerator programme:
The following player received entry into the singles main draw through the Next Gen Accelerator programme:
Ognjen MilićThe following player received entry into the singles main draw as an alternate:
The following players received entry from the qualifying draw:
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