| Singles | |
|---|---|
| 2017 Kobe Challenger | |
| Champion |  Stéphane Robert |
| Runner-up | Calvin Hemery |
| Final score | 7–6(7–1), 6–7(5–7), 6–1 |
Chung Hyeon was the defending champion but chose not to defend his title.
Stéphane Robert won the title after defeating Calvin Hemery 7–6(7–1), 6–7(5–7), 6–1 in the final.
Radu Albot (second round)
Taro Daniel (first round)
Matthew Ebden (second round)
Peter Polansky (second round) Tatsuma Ito (second round) Akira Santillan (semifinals) Go Soeda (quarterfinals) John Millman (quarterfinals)| Semifinals | Final | ||||||||||||
 Kwon Soon-woo | 2 | 5 | |||||||||||
| Calvin Hemery | 6 | 7 | |||||||||||
| Calvin Hemery | 61 | 77 | 1 | ||||||||||
| Stéphane Robert | 77 | 65 | 6 | ||||||||||
| Stéphane Robert | 77 | 6 | |||||||||||
| 6 | Akira Santillan | 61 | 2 | ||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | R Albot | 6 | 3 | ||||||||||||||||||||||||
 T Gabashvili | 1 | 0r | 1 | R Albot | 7 | 2 | 0 | ||||||||||||||||||||
| Y Takahashi | 5 | 2 | Q | Yo Watanuki | 5 | 6 | 6 | ||||||||||||||||||||
| Q | Yo Watanuki | 7 | 6 | Q | Yo Watanuki | 7 | 3 | 5 | |||||||||||||||||||
| Y Uchiyama | 6 | 3 | 64 | S-w Kwon | 5 | 6 | 7 | ||||||||||||||||||||
| S-w Kwon | 3 | 6 | 77 | S-w Kwon | 77 | 6 | |||||||||||||||||||||
| D-h Lee | 2 | 1 | 5 | T Ito | 64 | 3 | |||||||||||||||||||||
| 5 | T Ito | 6 | 6 | S-w Kwon | 2 | 5 | |||||||||||||||||||||
| 3 | M Ebden | 4 | 6 | 7 | C Hemery | 6 | 7 | ||||||||||||||||||||
| H Moriya | 6 | 4 | 5 | 3 | M Ebden | 4 | 3 | ||||||||||||||||||||
| C Hemery | 79 | 6 | C Hemery | 6 | 6 | ||||||||||||||||||||||
 A Krajicek | 67 | 2 | C Hemery | 6 | 6 | ||||||||||||||||||||||
 L Harris | 6 | 3 | 0 | 8 | J Millman | 4 | 3 | ||||||||||||||||||||
| Q | Sora Fukuda | 4 | 6 | 6 | Q | S Fukuda | 1 | 1 | |||||||||||||||||||
| WC | Yuya Kibi | 3 | 4 | 8 | J Millman | 6 | 6 | ||||||||||||||||||||
| 8 | J Millman | 6 | 6 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 7 | G Soeda | 6 | 6 | ||||||||||||||||||||||||
| WC | Y Shimizu | 2 | 0 | 7 | G Soeda | 6 | 6 | ||||||||||||||||||||
 J Jung | 2 | 6 | 6 | J Jung | 3 | 4 | |||||||||||||||||||||
| O Jasika | 6 | 4 | 4 | 7 | G Soeda | 5 | 3 | ||||||||||||||||||||
| S Robert | 6 | 6 | S Robert | 7 | 6 | ||||||||||||||||||||||
| Q | M Matosevic | 3 | 1 | S Robert | 6 | 7 | |||||||||||||||||||||
| WC | Ken Onishi | 1 | 4 | 4 | P Polansky | 4 | 5 | ||||||||||||||||||||
| 4 | P Polansky | 6 | 6 | S Robert | 77 | 6 | |||||||||||||||||||||
| 6 | A Santillan | 6 | 6 | 6 | A Santillan | 61 | 2 | ||||||||||||||||||||
| WC | K Uesugi | 1 | 3 | 6 | A Santillan | 6 | 77 | ||||||||||||||||||||
| SE |  H Hurkacz | 6 | 6 | SE | H Hurkacz | 3 | 65 | ||||||||||||||||||||
| Q |  L Miedler | 4 | 4 | 6 | A Santillan | 6 | 6 | ||||||||||||||||||||
 E Leshem | 3 | 4 | A Bolt | 3 | 2 | ||||||||||||||||||||||
| A Bolt | 6 | 6 | A Bolt | 7 | 2 | 6 | |||||||||||||||||||||
 Ze Zhang | 7 | 6 | Ze Zhang | 5 | 6 | 2 | |||||||||||||||||||||
| 2 | T Daniel | 5 | 1 | ||||||||||||||||||||||||
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