Kikusui, Kumamoto

 was a town located in Tamana District, Kumamoto Prefecture, Japan.
As of 2005, the town had an estimated population of 6,523 and a density of 170 persons per km². The total area was 38.27 km².
On March 1, 2006, Kikusui, along with the town of Mikawa (also from Tamana District), was merged to create the town of Nagomi and no longer exists as an independent municipality.