Masaaki Koido

Masaaki Koido (小井土 正亮) is a Japanese former footballer.

Playing career
Koido was born in Gifu on April 9, 1978. After graduating from University of Tsukuba, he joined J2 League club Mito HollyHock in 2001. He made his debut against Kawasaki Frontale on May 3, and went on to play five matches in a row, before retiring at the end of the 2001 season.