was a town located in Miyaki District, Saga Prefecture, Japan. It was established as a village and was later upgraded to a town on April 1, 1965.
As of 2003, the town had an estimated population of 11,419 and a Population density of 687.06 persons per km<sup>2</sup>. The total area was 16.62 km<sup>2</sup>.
On March 1, 2005, Kitashigeyasu, along with the towns of Mine and Nakabaru (both located in Miyaki District), was merged to form the town of Miyaki.