Chijiwa (千々石町 Chijiwa-chō)) was a town located in Minamitakaki District, Nagasaki, Japan.
On October 11, 2005 Chijiwa was merged with the towns of Aino, Azuma, Kunimi, Minamikushiyama, Mizuho and Obama, all from Minamitakaki District, to form the new city of Unzen.
As of 2003, the town had an estimated population of 5,634 and a density of 173.67 persons per km². The total area was 32.44 km².