| Date: | 10 November – 16 November |
| Edition: | 10th |
| Surface: | Hard |
| Location: | Yokohama, Japan |
| Champs: |  John Millman |
| Champd: |  Bradley Klahn / Matt Reid |
The 2014 Keio Challenger was a professional tennis tournament played on hard courts. It was the tenth edition of the tournament which is part of the 2014 ATP Challenger Tour. It took place in Yokohama, Japan between November 10 and November 16, 2014.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
 Japan | Tatsuma Ito | 103 | 1 | |
| Japan | Go Soeda | 117 | 2 | |
| Bradley Klahn | 120 | 3 | ||
 Russian Federation | Alexander Kudryavtsev | 121 | 4 | |
| Japan | Yūichi Sugita | 124 | 5 | |
| Japan | Hiroki Moriya | 146 | 6 | |
| Japan | Yoshihito Nishioka | 164 | 7 | |
 Korea, Republic of | Chung Hyeon | 183 | 8 |
The following players received wildcards into the singles main draw:
Masato Shiga Manato Tanimoto Kaichi Uchida Kaito UesugiThe following players received entry from the qualifying draw:
Kim Young-seok Nam Ji-sung Shuichi Sekiguchi Takao SuzukiThe following player received entry by a lucky loser spot:
Kim Cheong-euiThe following player received entry by a protected ranking:
See main article: 2014 Keio Challenger – Singles.
John Millman def. 
Kyle Edmund, 6–4, 6–4See main article: 2014 Keio Challenger – Doubles.
Bradley Klahn / Matt Reid def. 
Marcus Daniell / Artem Sitak, 4–6, 6–4, [10–7]