Bisai, Aichi

Bisai (尾西市^?, Bisai-shi) was a city located in Aichi Prefecture, Japan. The city was founded on January 1, 1955.

On April 1, 2005, Bisai, along with the town of Kisogawa (from Haguri District), was merged into the expanded city of Ichinomiya.

As of 2003, the city had an estimated population of 58,037 and the density of 2,636.85 persons per km². The total area was 22.01 km².