Coordinates: 34°21′12″N 132°33′27″E / 34.3532°N 132.5574°E / 34.3532; 132.5574
Aki (安芸郡, Aki-gun?) is a district located in Hiroshima Prefecture, Japan.
It is the location of Mazda's automobile factory which has been on the site since the early 1930s.
As of 2004 population data but counting decreases due to the March 20, 2005 merger, the district has an estimated population of 116,573 and a density of 1588 persons per km². The total area is 73.41 km².