Ichishi (一志郡 Ichishi-gun?) was a district located in Mie Prefecture, Japan.
As of 2003, the district had an estimated population of 70,117 and a density of 150.14 persons per km². The total area was 467.00 km².
Until the day before the dissolution on December 31, 2005, the district had 3 towns and a village.
On January 1, 2006, the towns of Hakusan, Ichishi and Karasu, and the village of Misugi, along with the towns of Anō, Geinō and Kawage, and the village of Misato (all from Age District), and the city of Hisai, were merged into the expanded city of Tsu. Ichishi District was dissolved as a result of this merger.