Keiichi Zaizen (財前 恵一, Zaizen Keiichi, born June 17, 1968) is a Japanese former football player and manager.
After graduating from high school, he joined Nissan Motors in 1987.
He also played for Japan Football League club Kashiwa Reysol (1994) and Consadole Sapporo (1996).
After retirement, Zaizen started coaching career at Consadole Sapporo in 1997.
In 2010, he moved to Avispa Fukuoka and mainly managed youth team until 2012.