Shiki (磯城郡 Shiki-gun?) is a district located in Nara Prefecture, Japan.
As of 2003, the district has an estimated population of 50,009 and a density of 1,607.49 persons per km². The total area is 31.11 km².
Coordinates: 34°33′50″N 135°47′17″E / 34.5640°N 135.788°E