2017 Keio Challenger
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6 – 12 March (ITF)
1st (ITF)
$25,000 (ITF)
| 2017 Keio Challenger | |
|---|---|
| Date | 27 February – 5 March (ATP) 6 – 12 March (ITF) |
| Edition | 12th (ATP) 1st (ITF) |
| Category | ATP Challenger Tour ITF Women's Circuit |
| Prize money | $50,000+H (ATP) $25,000 (ITF) |
| Surface | Hard |
| Location | Yokohama, Japan |
| Champions | |
| Men's singles | |
 Yūichi Sugita | |
| Women's singles | |
| Akiko Omae | |
| Men's doubles | |
 Marin Draganja / Tomislav Draganja | |
| Women's doubles | |
| Ayaka Okuno / Erika Sema | |
The 2017 Keio Challenger was a professional tennis tournament played on hard courts. It was the twelfth (ATP) and first (ITF) editions of the tournament and part of the 2017 ATP Challenger Tour and the 2017 ITF Women's Circuit. The tournament offered $50,000+H in prize money for the men and $25,000 prize money for the women. It took place in Yokohama, Japan between 27 February and 5 March 2017 for the men's edition and between 6 and 12 March 2017 for the women's.
Seeds
| Country | Player | Rank1 | Seed |
|---|---|---|---|
| JPN |
Yūichi Sugita | 114 | 1 |
 SUI |
Henri Laaksonen | 122 | 2 |
 KOR |
Lee Duck-hee | 135 | 3 |
| JPN |
Go Soeda | 136 | 4 |
 SLO |
Grega Žemlja | 150 | 5 |
 BEL |
Ruben Bemelmans | 152 | 6 |
 CHN |
Zhang Ze | 157 | 7 |
 AUS |
Andrew Whittington | 164 | 8 |
- 1 Rankings are as of February 20, 2017.
Other entrants
The following players received wildcards into the singles main draw:
Sora Fukuda- Masato Shiga
- Kaito Uesugi
- Yosuke Watanuki
The following player received entry into the singles main using a protected ranking:
The following player received entry into the singles main draw as a special exemption:
The following players received entry from the qualifying draw:
