Aki (安芸市, Aki-shi) is a city located in Kōchi Prefecture, Japan on the island of Shikoku. The city was founded on August 1, 1954.
As of 2010, the city has an estimated population of 19,882 and a population density of 64.4 persons per km2. The total area is 317.34 km2.
The heart of Aki city is located along the Japan National Route 55 and faces the Pacific Ocean to the south. Aki city has six stops on the Tosa Kuroshio Railway Asa Line (also known as the Gomen-Nahari Line (ごめん-なはり線)), and the city office can be reached by stopping at Aki City's main station. The stations within Aki city include Akano, Ananai, Jyũjōmae, Ioki, Aki, and Shimoyama.