| Keiichi Zaizen 財前 恵一 | |
| Fullname: | Keiichi Zaizen |
| Birth Date: | 17 June 1968 |
| Birth Place: | Muroran, Hokkaido, Japan |
| Height: | 1.73 m |
| Position: | Midfielder |
| Youthyears1: | 1984–1986 |
| Youthclubs1: | Muroran Otani High School |
| Years1: | 1987–1995 |
| Clubs1: | Yokohama Marinos |
| Caps1: | 12 |
| Goals1: | 0 |
| Years2: | 1994 |
| Clubs2: | →Kashiwa Reysol (loan) |
| Caps2: | 3 |
| Goals2: | 0 |
| Years3: | 1996 |
| Clubs3: | Consadole Sapporo |
| Caps3: | 4 |
| Goals3: | 0 |
| Totalcaps: | 19 |
| Totalgoals: | 0 |
| Manageryears1: | 2013–2014 |
| Managerclubs1: | Consadole Sapporo |
is a Japanese former football player and manager. His younger brother Nobuyuki is also a former footballer.
Zaizen was born in Muroran on June 17, 1968. After graduating from high school, he joined Nissan Motors in 1987. However he could hardly play in the match. He also played for Japan Football League club Kashiwa Reysol (1994) and Consadole Sapporo (1996). He retired end of 1996 season.
After retirement, Zaizen started coaching career at Consadole Sapporo in 1997. He mainly coached for youth team until 2009. In 2010, he moved to Avispa Fukuoka and mainly managed youth team until 2012. In 2013, he returned to Consadole and he became a manager for top team. However he was sacked in August 2014.
| Club performance | League | Cup | League Cup | Total | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Season | Club | League | Apps | Goals | Apps | Goals | Apps | Goals | Apps | Goals | |
| Japan | League | Emperor's Cup | J.League Cup | Total | |||||||
| 1987/88 | Nissan Motors | JSL Division 1 | 1 | 0 | 1 | 0 | |||||
| 1988/89 | 0 | 0 | 0 | 0 | |||||||
| 1989/90 | 3 | 0 | 0 | 0 | 3 | 0 | |||||
| 1990/91 | 4 | 0 | 0 | 0 | 4 | 0 | |||||
| 1991/92 | 3 | 0 | 3 | 0 | 6 | 0 | |||||
| 1992 | Yokohama Marinos | J1 League | colspan="2" | - | 0 | 0 | 0 | 0 | 0 | 0 | |
| 1993 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | |||
| 1994 | Kashiwa Reysol | Football League | 3 | 0 | 0 | 0 | colspan="2" | - | 3 | 0 | |
| 1995 | Yokohama Marinos | J1 League | 0 | 0 | 0 | 0 | colspan="2" | - | 0 | 0 | |
| 1996 | Consadole Sapporo | Football League | 4 | 0 | 0 | 0 | colspan="2" | - | 4 | 0 | |
| Total | 19 | 0 | 0 | 0 | 3 | 0 | 22 | 0 | |||