# Japan Open (darts)

The Japan Open is a darts tournament that has been held annually since 2005.

## List of tournaments
### Men's

| Year | Champion | Av. | Score | Runner-Up | Av. | Prize Money | Prize Money | Prize Money | Venue |
| Year | Champion | Av. | Score | Runner-Up | Av. | Total | Ch. | R.-Up | Venue |
| 1988 | Takao Tanida | n/a | beat | Hiroshi Watanobe | n/a | n/a | n/a | n/a | Tokyo |
| 1989 | Masayusa Satoh | n/a | beat | Takao Tanida | n/a | n/a | n/a | n/a | Tokyo |
| 1990 | Hiroshi Watanobe | n/a | beat | | n/a | n/a | n/a | n/a | Tokyo |
| 1991 | Eric Bristow | n/a | beat | Hiroshi Watanobe | n/a | n/a | n/a | n/a | Tokyo |
| 1992 | Yoshifumi Nomura | n/a | beat | Hiroshi Watanobe | n/a | n/a | n/a | n/a | Tokyo |
| 1993 | Hiroshi Watanobe (2) | n/a | beat | Hideki Washio | n/a | n/a | n/a | n/a | Tokyo |
| 1995 | Masayusa Satoh (2) | n/a | beat | Masahiro Hiraga | n/a | n/a | n/a | n/a | Tokyo |
| 1996 | Eiji Komori | n/a | beat | Daisuke Ishihara | n/a | n/a | n/a | n/a | Tokyo |
| 1997 | Hiroshi Watanobe (3) | n/a | beat | Yuya Evans | n/a | n/a | n/a | n/a | Tokyo |
| 1999 | Hiroshi Watanobe (4) | n/a | beat | Takeshi Tanaka | n/a | n/a | n/a | n/a | Tokyo |
| 2000 | Thanawat Yong | n/a | beat | Hiroshi Watanobe | n/a | n/a | n/a | n/a | Tokyo |
| 2001 | Andy Jenkins | n/a | beat | Tony David | n/a | n/a | n/a | n/a | Tokyo |
| 2002 | Masaki Kazusa | n/a | beat | Masahiro Hiraga | n/a | n/a | n/a | n/a | Tokyo |
| 2003 | Derek Wu | n/a | beat | Hiroshi Watanobe | n/a | n/a | n/a | n/a | Tokyo |
| 2004 | Daisuke Takeyama | n/a | beat | Naoki Shinohara | n/a | n/a | n/a | n/a | Tokyo |
| 2005 | Robert Grant | n/a | beat | Masaki Kazusa | n/a | n/a | n/a | n/a | Tokyo |
| 2006 | Simon Whitlock | n/a | beat | Taro Yachi | n/a | n/a | n/a | n/a | Tokyo |
| 2007 | Masaki Kazusa (2) | n/a | beat | Nozomu Kinoshita | n/a | YEN 448,000 | YEN 120,000 | YEN 60,000 | Yokohama Country Club, Yokohama |
| 2008 | Atsushi Takeuchi | n/a | 5 – 2 | Masaki Kazusa | n/a | YEN 448,000 | YEN 120,000 | YEN 60,000 | Yokohama Country Club, Yokohama |
| 2009 | Yukihiko Kiyama | n/a | 5 – 4 | Kenichi Ajiki | n/a | YEN 448,000 | YEN 120,000 | YEN 60,000 | Ota Ward Ikegami Hall, Tokyo |
| 2010 | Katsuya Aiba | n/a | 5 – 2 | Yuichi Okiyama | n/a | YEN 448,000 | YEN 120,000 | YEN 60,000 | Ota City Industrial Plaza, Tokyo |
| 2010 | Kyle Anderson | n/a | beat | Royden Lam | n/a | YEN 180,000 | YEN 70,000 | YEN 30,000 | Ota City Industrial Plaza, Tokyo |
| 2011 | Hiroaki Shimizu | n/a | beat | Katsuya Aiba | n/a | YEN 660,000 | YEN 250,000 | YEN 150,000 | Ota Ward Ikegami Hall, Tokyo |
| 2012 | Seigo Asada | n/a | beat | Osamu Niki | n/a | YEN 210,000 | YEN 60,000 | YEN 30,000 | Ota Ward Ikegami Hall, Tokyo |
| 2013 | Keita Ono | n/a | beat | Gordon Dixon | n/a | YEN 680,000 | YEN 500,000 | YEN 100,000 | PIO Hall, Tokyo |
| 2014 | Seigo Asada (2) | n/a | beat | Katsuya Aiba | n/a | YEN 660,000 | YEN 250,000 | YEN 150,000 | PIO Hall, Tokyo |
| 2015 | Seigo Asada (3) | 93.30 | 6 – 2 | Berry van Peer | 89.82 | YEN 660,000 | YEN 250,000 | YEN 150,000 | Ota-Ku Sangyo Plaza, Tokyo |
| 2016 | Seigo Asada (4) | 75.78 | 6 – 0 | Taro Yachi | 64.56 | YEN 660,000 | YEN 250,000 | YEN 150,000 | Ota-Ku Sangyo Plaza, Tokyo |
| 2017 | Seigo Asada (5) | n/a | beat | Thanawat Yong | n/a | YEN 660,000 | YEN 250,000 | YEN 150,000 | Ota-Ku Sangyo Plaza, Tokyo |
| 2018 | Hiroshi Tanji | n/a | beat | Chris White | n/a | YEN 620,000 | YEN 300,000 | YEN 100,000 | Ota-Ku Sangyo Plaza, Tokyo |
| 2019 | Katsuya Aiba (2) | n/a | 5 – 4 | Yuichirou Ogawa | n/a | YEN 870,000 | YEN 500,000 | YEN 150,000 | Ota-Ku Sangyo Plaza, Tokyo |
| 2022 | Paul Lim | n/a | 5 – 3 | Mitsuhiko Tatsunami | n/a | YEN 716,000 | YEN 200,000 | YEN 100,000 | Sumida Sangyo Kaikan, Tokyo |
| 2023 | Jun Matsuda | n/a | 5 – 4 | Kentaro Nishioka | n/a | | | |

### Women's

| Year | Champion | Av. | Score | Runner-Up | Av. | Prize Money | Prize Money | Prize Money | Venue |
| Year | Champion | Av. | Score | Runner-Up | Av. | Total | Ch. | R.-Up | Venue |
| 1991 | Yoko Koyama | n/a | beat | Yukari Nishikawa | n/a | n/a | n/a | n/a | Tokyo |
| 1993 | Yukari Nishikawa | n/a | beat | Mayumi Shimizu | n/a | n/a | n/a | n/a | Tokyo |
| 1995 | Mayumi Chiba | n/a | beat | Yoko Miyaoka | n/a | n/a | n/a | n/a | Tokyo |
| 1999 | Teruko Kajiwara | n/a | beat | Fumie Ono | n/a | n/a | n/a | n/a | Tokyo |
| 2000 | Teruko Kajiwara (2) | n/a | beat | Yoko Higuchi | n/a | n/a | n/a | n/a | Tokyo |
| 2001 | Yukari Nishikawa (2) | n/a | beat | Shinobu Sasaki | n/a | n/a | n/a | n/a | Tokyo |
| 2002 | Yukari Nishikawa (3) | n/a | beat | Naho Ueki | n/a | n/a | n/a | n/a | Tokyo |
| 2003 | Yukari Nishikawa (4) | n/a | beat | Mika Yamakawa | n/a | n/a | n/a | n/a | Tokyo |
| 2004 | Yukari Nishikawa (5) | n/a | beat | Mayumi Ouchi | n/a | n/a | n/a | n/a | Tokyo |
| 2005 | Yuka Uto | n/a | beat | Kazuko Yamaguchi | n/a | n/a | n/a | n/a | Tokyo |
| 2006 | Jannette Jonathan | n/a | beat | Kumiko Nagasawa | n/a | n/a | n/a | n/a | Tokyo |
| 2007 | Mayumi Ouchi | n/a | beat | Ayumi Takeda | n/a | n/a | n/a | n/a | Yokohama Country Club, Yokohama |
| 2008 | Mayumi Ouchi (2) | n/a | 4 – 2 | Yukari Asano | n/a | n/a | n/a | n/a | Yokohama Country Club, Yokohama |
| 2009 | Mayumi Ouchi (3) | n/a | 4 – 2 | Ayumi Okubo | n/a | n/a | n/a | n/a | Ota Ward Ikegami Hall, Tokyo |
| 2010 | Naoki Komine | n/a | 4 – 3 | Atsushi Yamamoto | n/a | n/a | n/a | n/a | Ota City Industrial Plaza, Tokyo |
| 2010 | Lavinia Hogg | n/a | beat | Analiza Awitan | n/a | n/a | n/a | n/a | Ota City Industrial Plaza, Tokyo |
| 2011 | Naoki Komine (2) | n/a | beat | Mayumi Ouchi | n/a | n/a | n/a | n/a | Ota Ward Ikegami Hall, Tokyo |
| 2012 | Aya Nishihara | n/a | beat | Yukari Asano | n/a | n/a | n/a | n/a | Ota Ward Ikegami Hall, Tokyo |
| 2013 | Kiyo Shimizu | n/a | beat | Yukari Asano | n/a | n/a | n/a | n/a | PIO Hall, Tokyo |
| 2014 | Mayumi Ouchi (4) | n/a | beat | Asako Hiyama | n/a | n/a | n/a | n/a | PIO Hall, Tokyo |
| 2015 | Fallon Sherrock | 75.72 | 5 – 2 | Akari Oshiro | 67.14 | n/a | n/a | n/a | Ota-Ku Sangyo Plaza, Tokyo |
| 2016 | Fallon Sherrock (2) | 75.27 | 5 – 3 | Mayumi Ouchi | 71.13 | n/a | n/a | n/a | Ota-Ku Sangyo Plaza, Tokyo |
| 2017 | Asako Atarashi | n/a | beat | Sayaka Kameo | n/a | n/a | n/a | n/a | Ota-Ku Sangyo Plaza, Tokyo |
| 2018 | Mikuru Suzuki | n/a | beat | A-Reum Kim | n/a | n/a | n/a | n/a | Ota-Ku Sangyo Plaza, Tokyo |
| 2019 | Mayumi Ouchi (5) | n/a | 5 – 1 | Hyo-Jin Kim | n/a | n/a | n/a | n/a | Ota-Ku Sangyo Plaza, Tokyo |
| 2022 | Mikuru Suzuki (2) | n/a | 5 – 0 | Yoko Tsukui | n/a | YEN 308,000 | YEN 100,000 | YEN 50,000 | Sumida Sangyo Kaikan, Tokyo |