| Singles | |
|---|---|
| 2023 Matsuyama Challenger | |
| Champion |  Luca Nardi |
| Runner-up |  Taro Daniel |
| Score | 3–6, 6–4, 6–2 |
Hong Seong-chan was the defending champion [1] but lost in the first round to Luca Nardi.
Nardi won the title after defeating Taro Daniel 3–6, 6–4, 6–2 in the final. [2]
Taro Daniel (final) Shintaro Mochizuki (second round) Luca Nardi (champion) Sho Shimabukuro (second round)
Benjamin Hassan (quarterfinals)
Marc Polmans (first round)
Bu Yunchaokete (quarterfinals)
Hsu Yu-hsiou (quarterfinals)| Semifinals | Final | ||||||||||||
| 1 | Taro Daniel | 77 | 6 | ||||||||||
| Q |  August Holmgren | 65 | 2 | ||||||||||
| 1 | Taro Daniel | 6 | 4 | 2 | |||||||||
| 3 | Luca Nardi | 3 | 6 | 6 | |||||||||
| 3 | Luca Nardi | 6 | 6 | ||||||||||
 Geoffrey Blancaneaux | 3 | 3 | |||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | T Daniel | 6 | 6 | ||||||||||||||||||||||||
| WC | Shunsuke Nakagawa | 1 | 2 | 1 | T Daniel | 6 | 3 | 6 | |||||||||||||||||||
 M Echargui | 6 | 6 | M Echargui | 2 | 6 | 2 | |||||||||||||||||||||
| A Weber | 0 | 3 | 1 | T Daniel | 6 | 3 | 7 | ||||||||||||||||||||
| J Jung | 4 | 6 | 4 | 8 | Y-h Hsu | 2 | 6 | 5 | |||||||||||||||||||
| Y Shimizu | 6 | 2 | 6 | Y Shimizu | 4 | 3 | |||||||||||||||||||||
 Z Kolář | 2 | 3 | 8 | Y-h Hsu | 6 | 6 | |||||||||||||||||||||
| 8 | Y-h Hsu | 6 | 6 | 1 | T Daniel | 77 | 6 | ||||||||||||||||||||
| 4 | S Shimabukuro | 5 | 6 | 6 | Q | A Holmgren | 65 | 2 | |||||||||||||||||||
| G Fonio | 7 | 4 | 4 | 4 | S Shimabukuro | 63 | 3 | ||||||||||||||||||||
 D Ajduković | 6 | 6 | D Ajduković | 77 | 6 | ||||||||||||||||||||||
| K Uchida | 4 | 4 | D Ajduković | 5 | 6 | 65 | |||||||||||||||||||||
| T-l Wu | 4 | 1 | Q | A Holmgren | 7 | 3 | 77 | ||||||||||||||||||||
| WC | Y Uchiyama | 6 | 6 | WC | Y Uchiyama | 68 | 65 | ||||||||||||||||||||
| Q | A Holmgren | 6 | 6 | Q | A Holmgren | 710 | 77 | ||||||||||||||||||||
| 6 | M Polmans | 0 | 4 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 7 | Y Bu | 64 | 6 | 6 | |||||||||||||||||||||||
 M Efstathiou | 77 | 2 | 2 | 7 | Y Bu | 6 | 5 | 7 | |||||||||||||||||||
| Q | Z Li | 6 | 4 | 4 | D Sweeny | 4 | 7 | 5 | |||||||||||||||||||
| D Sweeny | 2 | 6 | 6 | 7 | Y Bu | 5 | 3 | ||||||||||||||||||||
 F Ferreira Silva | 3 | 2 | 3 | L Nardi | 7 | 6 | |||||||||||||||||||||
| J McCabe | 6 | 6 | J McCabe | 4 | 4 | ||||||||||||||||||||||
 S-c Hong | 5 | 6 | 64 | 3 | L Nardi | 6 | 6 | ||||||||||||||||||||
| 3 | L Nardi | 7 | 3 | 77 | 3 | L Nardi | 6 | 6 | |||||||||||||||||||
| 5 | B Hassan | 6 | 6 | G Blancaneaux | 3 | 3 | |||||||||||||||||||||
| Q | H Moriya | 4 | 4 | 5 | B Hassan | 1 | 77 | 6 | |||||||||||||||||||
| Q | J Trotter | 4 | 3 | Q | B Ellis | 6 | 64 | 3 | |||||||||||||||||||
| Q | B Ellis | 6 | 6 | 5 | B Hassan | 3 | 2 | ||||||||||||||||||||
| WC | Sho Katayama | 0 | 4 | G Blancaneaux | 6 | 6 | |||||||||||||||||||||
| G Blancaneaux | 6 | 6 | G Blancaneaux | 7 | 6 | ||||||||||||||||||||||
| Q | N Nakagawa | 2 | 2 | 2 | S Mochizuki | 5 | 3 | ||||||||||||||||||||
| 2 | S Mochizuki | 6 | 6 | ||||||||||||||||||||||||
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