Hirakawa (平川市 Hirakawa-shi) is a city located in south-central Aomori Prefecture, Japan.
As of April 2012, the city has an estimated population of 33,328 and a population density of 96.4 persons per km². The total area is 345.81 km².
Hirakawa is located in the mountains and hills to be northwest of Lake Towada. The city has a cold maritime climate characterized by cool summers and cold winters with very heavy snowfall.
The area around Hirakawa was part of the Hirosaki Domain of the Tsugaru clan during the Edo period. After the Meiji Restoration, it became part of Minamitsugaru District.
The modern city of Hirakawa was established on January 1, 2006, from the merger of the towns of Hiraka and Onoe, and the village of Ikarigaseki (all from Minamitsugaru District).