| Full name | Rissei Ō |
|---|---|
| Chinese | 王立誠 |
| Pinyin | Wáng Lìchéng |
| Born | November 7, 1958 Taiwan |
| Teacher | Kano Yoshinori |
| Turned pro | 1972 |
| Rank | 9 dan |
| Affiliation | Nihon Ki-in; Tokyo branch |
Ō Rissei (王 立誠, Ō Rissei, Chinese: 王 立誠; pinyin: Wáng Lìchéng, born November 7, 1958) is a professional Go player in Japan.
Rissei was born in Taiwan and moved to Japan when he was 13 years old; he would become professional the following year. His instructor is Kano Yoshinori.
Ranks #10-t in total amount of titles in Japan.
| Domestic | ||
|---|---|---|
| Title | Wins | Runners-up |
| Kisei | 3 (2000-2002) | 1 (2003) |
| Meijin | 1 (1998) | |
| Honinbo | 1 (1998) | |
| Judan | 4 (2001-2004) | 2 (1996, 2005) |
| Oza | 4 (1995, 1998-2000) | 2 (1996, 2001) |
| Agon Cup | 1 (1994) | 1 (2001) |
| NHK Cup | 1 (1997) | 2 (1988, 2003) |
| Shinjin-O | 1 (1981) | 1 (1986) |
| NEC Cup | 3 (1989, 1998, 2002) | |
| Kakusei | 4 (1989, 1993, 1999, 2000) | 1 (1990) |
| Hayago Championship | 2 (1992, 1997) | |
| Shin-Ei | 1 (1983) | |
| Prime Minister Cup | 1 (1980) | |
| Total | 19 | 18 |
| Continental | ||
| Asian TV Cup | 1 (1997) | |
| Total | 0 | 1 |
| International | ||
| LG Cup | 1 (1998) | |
| Chunlan Cup | 1 (2000) | 1 (2001) |
| Fujitsu Cup | 2 (1992, 1997) | |
| Zhonghuan Cup | 1 (2004) | |
| Total | 2 | 4 |
| Career total | ||
| Total | 21 | 23 |