# Okan (Go competition)

The Okan (Japanese: 王冠, Hepburn: Ōkan, 'crown' or 'king's crown') is a Japanese Go competition. It is open only to players of the Nihon Ki-in's Chubu branch located in Nagoya. The title match is a single game played between the reigning titleholder and a challenger. The winner's purse is 1,700,000 yen ($15,000).

## Winners and runners-up

Okan :
| Edition | Year | Winner | Runner-up |
| 1st | 1953 | Michiharu Sakai | |
| 2nd | 1956 | Tatsuaki Iwata | |
| 3rd | 1957 | Michiharu Sakai | |
| 4th | 1958 | Tatsuaki Iwata | |
| 5th | 1959 | Tatsuaki Iwata | |
| 6th | 1960 | Toshihiro Shimamura | 五十川正雄 |
| 7th | 1961 | Toshihiro Shimamura | Tatsuaki Iwata |
| 8th | 1962 | Toshihiro Shimamura | 五十川正雄 |
| 9th | 1964 | Toshihiro Shimamura | 五十川正雄 |
| 10th | 1965 | Toshihiro Shimamura | Tatsuaki Iwata |
| 11th | 1967 | Tatsuaki Iwata | Toshihiro Shimamura |
| 12th | 1969 | Tatsuaki Iwata | Toshihiro Shimamura |
| 13th | 1970 | Tatsuaki Iwata | Masamitsu Tsuchida |
| 14th | 1972 | Yasumasa Hane | Tatsuaki Iwata |
| 15th | 1974 | Toshihiro Shimamura | Yasumasa Hane |
| 16th | 1975 | Toshihiro Shimamura | Yasumasa Hane |
| 17th | 1976 | Tatsuaki Iwata | Toshihiro Shimamura |
| 18th | 1977 | Hiroshi Yamashiro | Tatsuaki Iwata |
| 19th | 1978 | Yasumasa Hane | Hiroshi Yamashiro |
| 20th | 1979 | Tatsuaki Iwata | Yasumasa Hane |
| 21st | 1980 | Tatsuaki Iwata | Shigeru Baba |
| 22nd | 1981 | Hiroshi Yamashiro | Tatsuaki Iwata |
| 23rd | 1982 | Hiroshi Yamashiro | Yasumasa Hane |
| 24th | 1983 | Yasumasa Hane | Hiroshi Yamashiro |
| 25th | 1984 | Hiroshi Yamashiro | Yasumasa Hane |
| 26th | 1985 | Hiroshi Yamashiro | Tatsuaki Iwata |
| 27th | 1986 | Hiroshi Yamashiro | Yasumasa Hane |
| 28th | 1987 | Hiroshi Yamashiro | Masamitsu Tsuchida |
| 29th | 1988 | Masaki Ogata | Hiroshi Yamashiro |
| 30th | 1989 | Masaki Ogata | Tatsuaki Iwata |
| 31st | 1990 | Masaki Ogata | Yasumasa Hane |
| 32nd | 1991 | Masaki Ogata | Yasumasa Hane |
| 33rd | 1992 | Yasumasa Hane | Masaki Ogata |
| 34th | 1993 | Hiroshi Yamashiro | Yasumasa Hane |
| 35th | 1994 | Hiroshi Yamashiro | Masaki Ogata |
| 36th | 1995 | Hiroshi Yamashiro | Yasumasa Hane |
| 37th | 1996 | Hiroshi Yamashiro | Naoto Hikosaka |
| 38th | 1997 | Hironari Nakano | Hiroshi Yamashiro |
| 39th | 1998 | Hironari Nakano | Hiroshi Yamashiro |
| 40th | 1999 | Naoki Hane | Hironari Nakano |
| 41st | 2000 | Hiroshi Yamashiro | Naoki Hane |
| 42nd | 2001 | Hiroshi Yamashiro | Hideki Matsuoka |
| 43rd | 2002 | Naoki Hane | Hiroshi Yamashiro |
| 44th | 2003 | Naoki Hane | Naoto Hikosaka |
| 45th | 2004 | Naoki Hane | Hiroshi Yamashiro |
| 46th | 2005 | Hiroshi Yamashiro | Naoki Hane |
| 47th | 2006 | Hideki Matsuoka | Hiroshi Yamashiro |
| 48th | 2007 | Naoki Hane | Hideki Matsuoka |
| 49th | 2008 | Naoki Hane | Hiroshi Yamashiro |
| 50th | 2009 | Naoki Hane | Hiroshi Yamashiro |
| 51st | 2010 | Hiroshi Yamashiro | Naoki Hane |
| 52nd | 2011 | Naoki Hane | Hiroshi Yamashiro |
| 53rd | 2012 | Naoki Hane | Hironari Nakano |
| 54th | 2013 | Naoki Hane | Hironari Nakano |
| 55th | 2014 | Naoki Hane | Hiroshi Yamashiro |
| 56th | 2015 | Naoki Hane | Masaki Ogata |
| 57th | 2016 | Atsushi Ida | Naoki Hane |
| 58th | 2017 | Atsushi Ida | Yuta Mutsuura |
| 59th | 2018 | Atsushi Ida | Hironari Nakano |
| 60th | 2019 | Atsushi Ida | Masaki Ogata |
| 61st | 2020 | Atsushi Ida | Yu Otake |
| 62nd | 2021 | Atsushi Ida | Yu Otake |
| 63rd | 2022 | Atsushi Ida | Yuta Mutsuura |
| 64th | 2023 | Atsushi Ida | Yuta Mutsuura |
| 65th | 2024 | Atsushi Ida | Yuta Mutsuura |