was a town located in Kitasaitama District, Saitama Prefecture, Japan.
As of 2003, the town had an estimated population of 20,105 and a density of 702.97 persons per km<sup>2</sup>. The total area was 28.60 km<sup>2</sup>.
On March 23, 2010, Kisai, along with the towns of Kitakawabe and à Âtone (all from Kitasaitama District), was merged into the expanded city of Kazo. Kitasaitama District was dissolved as a result of this merger.