| 2014 Keio Challenger | |
|---|---|
| Date | 10 November – 16 November |
| Edition | 10th |
| Surface | Hard |
| Location | Yokohama, Japan |
| Champions | |
| Singles | |
 John Millman | |
| Doubles | |
 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 |
|---|---|---|---|
 JPN | Tatsuma Ito | 103 | 1 |
| JPN | Go Soeda | 117 | 2 |
| USA | Bradley Klahn | 120 | 3 |
 RUS | Alexander Kudryavtsev | 121 | 4 |
| JPN | Yūichi Sugita | 124 | 5 |
| JPN | Hiroki Moriya | 146 | 6 |
| JPN | Yoshihito Nishioka | 164 | 7 |
 KOR | 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 Suzuki The following player received entry by a lucky loser spot:
Kim Cheong-euiThe following player received entry by a protected ranking:
John Millman def. 
Kyle Edmund, 6–4, 6–4 Bradley Klahn / Matt Reid def. 
Marcus Daniell / Artem Sitak, 4–6, 6–4, [10–7]The 2010 Dunlop World Challenge was a professional tennis tournament played on indoor carpet courts. It was the third edition of the tournament which was part of the 2010 ATP Challenger Tour and 2010 ITF Women's Circuit. It took place in Toyota, Japan between 22 and 28 November 2010.
The 2011 Samsung Securities Cup was a professional tennis tournament played on hard courts. It was the 12th edition and the 1st edition of the tournament which was part of the 2011 ATP Challenger Tour and the 2011 ITF Women's Circuit. It took place in Seoul, South Korea between 17 and 23 October 2011.
The 2011 JSM Challenger of Champaign–Urbana was a professional tennis tournament played on hard courts. It was the tenth edition of the tournament which is part of the 2011 ATP Challenger Tour. It took place in Champaign, United States between 14 and 20 November 2011.
The 2012 Samsung Securities Cup was a professional tennis tournament played on hard courts. It was the 13th edition of the tournament which was part of the 2012 ATP Challenger Tour and the 2012 ITF Women's Circuit. It took place in Seoul, Korea between 22 and 28 October 2012.
The 2013 Samsung Securities Cup was a professional tennis tournament played on hard courts. It was the 14th edition of the men's tournament which was part of the 2013 ATP Challenger Tour and the third edition of the women's event, which was part of the 2013 ITF Women's Circuit. It took place in Seoul, South Korea, on 28 October–3 November 2013.
The 2014 Adidas International Gimcheon was a professional tennis tournament played on hard courts. It was the first edition of the tournament which was part of the 2014 ATP Challenger Tour. It took place in Gimcheon, Korea between 5 and 11 May 2014.
The 2014 Busan Open Challenger Tour was a professional tennis tournament played on hard courts. It was the thirteenth edition of the tournament which was part of the 2014 ATP Challenger Tour. It took place in Busan, South Korea between 12 and 18 May 2014.
The 2014 Tevlin Women's Challenger was a professional tennis tournament played on indoor hard courts. It was the 10th edition of the tournament and part of the 2014 ITF Women's Circuit, offering a total of $50,000 in prize money. It took place in Toronto, Ontario, Canada between October 27 and November 2, 2014.
The 2014 IPP Open and the Orto-Lääkärit Open were professional tennis tournaments played on indoor hard courts. It was the 14th edition of the men's tournament which was part of the 2014 ATP Challenger Tour, offering a total of €42,500 in prize money, and seventh edition of the women's tournament, which was part of the 2014 ITF Women's Circuit, offering a total of $10,000 in prize money. The two events took place together at the Tali Tennis Center in Helsinki, Finland, on 10–16 November 2014.
The 2014 Dunlop World Challenge was a professional tennis tournament played on indoor carpet courts. It was the 7th edition of the tournament which was part of the 2014 ATP Challenger Tour and the 2014 ITF Women's Circuit, offering a total of $75,000+H for women and $40,000+H for men in prize money respectively. It took place in Toyota, Japan, on 17–23 November 2014.
The 2014 Sparkassen ATP Challenger was a professional tennis tournament played on indoor hard courts in Ortisei, Italy between 3 and 9 November 2014. It was the fifth edition of the tournament which was part of the 2014 ATP Challenger Tour.
The 2015 Gimcheon Open ATP Challenger was a professional tennis tournament played on hard courts. It was the second edition of the tournament which was part of the 2015 ATP Challenger Tour. It took place in Gimcheon, Korea between 1 and 7 June 2015.
The 2016 Kobe Challenger was a professional tennis tournament played on indoor hard courts. It was the 2nd edition of the tournament which was part of the 2016 ATP Challenger Tour. It took place in Kobe, Japan between 7 and 13 November 2016.
The 2016 Dunlop World Challenge was a professional tennis tournament played on indoor hard courts. It was the 9th edition of the tournament and part of the 2016 ATP Challenger Tour and the 2016 ITF Women's Circuit, offering $50,000+H each in prize money for both men and women's events. It took place in Toyota, Japan, on 14–20 November 2016.
The 2018 Shenzhen Longhua Open was a professional tennis tournament played on hard courts. It was the second (men) and third (women) editions of the tournament which was part of the 2018 ATP Challenger Tour and the 2018 ITF Women's Circuit. It took place in Shenzhen, China between 29 October and 11 November 2018.
The 2019 Keio Challenger was a professional tennis tournament played on hard courts. It was the fourteenth (men's) and third (women's) editions of the tournament and part of the 2019 ATP Challenger Tour and the 2019 ITF Women's World Tennis Tour. It took place in Yokohama, Japan between 25 February and 10 March 2019.
The 2019 International Challenger Zhangjiagang was a professional tennis tournament played on hard courts. It was the third edition of the tournament which was part of the 2019 ATP Challenger Tour. It took place in Zhangjiagang, China between 18 and 24 March 2019.
The 2019 Gwangju Open was a professional tennis tournament played on hard courts. It was the 4th edition of the tournament which was part of the 2019 ATP Challenger Tour. It took place in Gwangju, South Korea between 13 and 19 May 2019.
The 2019 Kentucky Bank Tennis Championships was a professional tennis tournament played on outdoor hard courts. It was the 24th (ATP) and 22nd (ITF) editions of the tournament and was part of the 2019 ATP Challenger Tour and the 2019 ITF Women's World Tennis Tour. It took place in Lexington, United States, on 29 July–4 August 2019.
The 2019 Liuzhou Open was a professional tennis tournament played on hard courts. It was the second edition of the tournament for men and fourth edition for women. It was the part of the 2019 ATP Challenger Tour and 2019 ITF Women's World Tennis Tour. It took place in Liuzhou, China between 21 October and 3 November 2019.