Seiichi Negishi (根岸 誠一, Negishi Seiichi, born April 20, 1969) is a Japanese former football player.
After graduating from high school, he joined Japan Soccer League club Honda in 1988.
However, he retired due to injury at the end of the 1992 season before the league competition started.
In 1989, Negishi was selected for Japan national futsal team at the 1989 Futsal World Championship in Netherlands.
This biographical article related to a Japanese association football defender born in the 1960s is a stub.