# Kōfu International Open

The Kōfu International Open is a tournament for professional female tennis players on outdoor hardcourts. The event is classified as a $40,000 ITF Women's Circuit. It had been held in Kōfu, Japan, since 2003. In 2011, it was a $50k women's event.

## Past finals
### Women's singles

| Year | Champion | Runner-up | Score |
| 2024 | Catherine Harrison | Lee Ya-hsuan | 6–7$^{(8–10)}$, 6–1, 6–1 |
| 2023 | Jang Su-jeong | Han Na-lae | 2–6, 6–3, 6–2 |
| 2020–22 | cancelled due to the COVID-19 pandemic | cancelled due to the COVID-19 pandemic | cancelled due to the COVID-19 pandemic |
| 2019 | Lee Hua-chen | Stephanie Wagner | 6–7$^{(4–7)}$, 6–3, 6–4 |
| 2018 | Luksika Kumkhum | Bianca Andreescu | 6–3, 6–3 |
| 2017 | Mayo Hibi | Han Na-lae | 5–7, 6–3, 6–2 |
| 2016 | Susanne Celik | Zhu Lin | 7–6$^{(7–3)}$, 6–3 |
| 2015 | Miki Miyamura | Aiko Yoshitomi | 6–4, 6–2 |
| 2014 | Chiaki Okadaue | Mana Ayukawa | 3–6, 7–6$^{(9–7)}$, 6–2 |
| 2013 | Yuuki Tanaka | Hiroko Kuwata | 6–3, 6–1 |
| 2012 | Hiroko Kuwata | Liu Fangzhou | 6–4, 4–6, 7–6$^{(9–7)}$ |
| 2011 | Chang Kai-chen | Mandy Minella | 6–4, 1–6, 6–4 |
| 2010 | Sachie Ishizu | Akiko Yonemura | 1–6, 6–1, 6–0 |
| 2009 | Misaki Doi | Erika Sema | 7–5, 6–2 |

### Women's doubles

| Year | Champions | Runners-up | Score |
| 2024 | Erina Hayashi Saki Imamura | Rutuja Bhosale Ankita Raina | 6–3, 7–5 |
| 2023 | Han Na-lae Jang Su-jeong | Georgina García Pérez Eri Hozumi | 6–0, 6–4 |
| 2020–22 | cancelled due to the COVID-19 pandemic | cancelled due to the COVID-19 pandemic | cancelled due to the COVID-19 pandemic |
| 2019 | Chang Kai-chen Hsu Ching-wen | Emina Bektas Tara Moore | 6–1, 6–3 |
| 2018 | Gao Xinyu Luksika Kumkhum | Erina Hayashi Momoko Kobori | 6–0, 2–6, [10–4] |
| 2017 | Han Na-lae Luksika Kumkhum | Erina Hayashi Robu Kajitani | 6–3, 6–0 |
| 2016 | Shuko Aoyama Erina Hayashi | Kanae Hisami Kotomi Takahata | 7–5, 7–5 |
| 2015 | Haruka Kaji Aiko Yoshitomi | Rika Fujiwara Akari Inoue | 6–2, 6–3 |
| 2014 | Nagi Hanatani Hikari Yamamoto | Riko Fujioka Hayaka Murase | 3–6, 6–2, [10–7] |
| 2013 | Akari Inoue Hiroko Kuwata | Han Na-lae Yang Zi | 3–6, 7–5, [10–7] |
| 2012 | Ayumi Oka Kotomi Takahata | Eri Hozumi Remi Tezuka | 6–4, 5–7, [10–3] |
| 2011 | Chan Chin-wei Hsu Wen-hsin | Remi Tezuka Akiko Yonemura | 6–3, 6–4 |
| 2010 | Maki Arai Seiko Okamoto | Shiho Hisamatsu Maiko Inoue | 6–4, 6–4 |
| 2009 | Shuko Aoyama Akari Inoue | Maki Arai Miki Miyamura | 7–5, 3–6, [10–8] |

### Men's singles

| Year | Champion | Runner-up | Score |
| 2020 | cancelled due to the COVID-19 pandemic | cancelled due to the COVID-19 pandemic | cancelled due to the COVID-19 pandemic |
| 2019 | Jumpei Yamasaki | Sho Shimabukuro | 7–6$^{(7–5)}$, 6–3 |
| 2018 | Hong Seong-chan | Makoto Ochi | 7–6$^{(7–2)}$, 6–1 |
| 2017 | Takuto Niki | Shane Vinsant | 6–4, 4–0 ret. |
| 2016 | Lee Duck-hee | Yuya Kibi | 6–2, 6–3 |
| 2015 | Lim Yong-kyu | Yasutaka Uchiyama | 7–6$^{(8–6)}$, 6–3 |
| 2014 | Takuto Niki | Yusuke Watanuki | 6–4, 6–2 |
| 2013 | Chang Yu | Nam Hyun-woo | 6–2, 6–1 |
| 2012 | Hiroki Moriya | Yasutaka Uchiyama | 6–1, 6–4 |
| 2011 | Not held | Not held | Not held |
| 2010 | Go Soeda | Yi Chu-huan | 6–3, 6–4 |
| 2009 | An Jae-sung | Yūchi Sugita | 5–7, 6–4, 7–6$^{(7–5)}$ |
| 2008 | Yaoki Ishii | Daniel King-Turner | 6–7$^{(2–7)}$, 6–3, 6–4 |
| 2007 | Kwon Hyung-tae | An Jae-sung | 7–5, 6–1 |
| 2006 | Jun Woong-sun | Tetsuya Chaen | 7–6$^{(7–4)}$, 7–5 |
| 2005 | Satoshi Iwabuchi | Im Kyu-tae | 6–2, 7–6$^{(8–6)}$ |
| 2004 | Michihisa Onoda | Kentaro Masuda | 6–3, 7–5 |
| 2003 | Takahiro Terachi | Kentaro Masuda | 6–2, 6–2 |

### Men's doubles

| Year | Champions | Runners-up | Score |
| 2020 | cancelled due to the COVID-19 pandemic | cancelled due to the COVID-19 pandemic | cancelled due to the COVID-19 pandemic |
| 2019 | Hiroyasu Ehara Sho Katayama | Blake Ellis Michael Look | 6–2, 6–4 |
| 2018 | Hiroyasu Ehara Sho Katayama | Seol Jae-min Song Min-kyu | 7–5, 7–6$^{(7–5)}$ |
| 2017 | Katsuki Nagao Hiromasa Oku | Yuichi Ito Jumpei Yamasaki | 6–4, 6–7$^{(4–7)}$, [10–3] |
| 2016 | Shintaro Imai Takuto Niki | Yuya Kibi Toshihide Matsui | 6–1, 6–2 |
| 2015 | Gao Xin Li Zhe | Takashi Saito Yusuke Watanuki | 6–0, 6–7$^{(4–7)}$, [10–1] |
| 2014 | Takuto Niki Arata Onozawa | Toshihide Matsui Danai Udomchoke | 6–4, 6–2 |
| 2013 | Hiroki Kondo Kento Takeuchi | Chang Yu Kim Cheong-eui | 6–1, 3–6, [10–7] |
| 2012 | Peng Hsien-yin Bumpei Sato | Chang Yu Gao Xin | 6–3, 5–7, [10–6] |
| 2011 | Not held | Not held | Not held |
| 2010 | Tasuku Iwami Hiroki Kondo | Mikal Statham Maciek Sykut | 6–2, 6–3 |
| 2009 | Yang Tsung-hua Yi Chu-huan | Yuya Kibi Tomohiro Shinokawa | 6–1, 6–0 |
| 2008 | Gong Maoxin Li Zhe | G.D. Jones Daniel King-Turner | 6–1, 7–5 |
| 2007 | Akito Higa Tomohiro Shinokawa | An Jae-sung Daniel Yoo | 3–6, 6–4, 6–4 |
| 2006 | Jun Woong-sun Kim Sun-yong | Minh Le Hiroyasu Sato | 6–2, 7–6$^{(7–4)}$ |
| 2005 | Im Kyu-tae Kwon Oh-hee | Mark Nielsen Hiroyasu Sato | 4–6, 7–6$^{(7–3)}$, 6–3 |
| 2004 | Scott Lipsky David Martin | Mark Nielsen Michihisa Onoda | 2–6, 7–5, 7–6$^{(8–6)}$ |
| 2003 | Robert Cheyne Mark Nielsen | Katsushi Fukuda Michael Ryderstedt | 4–6, 6–4, 6–3 |