Kitashigeyasu (北茂安町 Kitashigeyasu-chō) was a town located in Miyaki District, Saga, Japan.
As of 2003, the town had an estimated population of 11,419 and a density of 687.06 persons per km². The total area was 16.62 km².
The status of this municipality was changed from a village to a town on April 1, 1965.
On March 1, 2005 Kitashigeyasu was merged with the towns of Mine and Nakabaru, all from Miyaki District, to form the new town of Miyaki.