久居市是三重县的一个已不存在的市。2006年1月1日，与旧津市等10市町村合并为津市。

Hisai(久居市,Hisai-shi) was a city located in Mie, Japan. The city was founded on August 1, 1970.

As of 2003, the city had an estimated population of 41,669 and the density of 610.98 persons per km². The total area was 68.20 km².

On January 1, 2006, Hisai, along with the towns of Anō, Geinō and Kawage, the village of Misato (all from Age District), the towns of Hakusan, Ichishi and Karasu, and the village of Misugi (all from Ichishi District), was merged into the expanded city of Tsu and thus no longer exists as an independent municipality.