Esashi (江刺市; Esashi-shi) was a city located in Iwate Prefecture, Japan.
The city was founded on November 3, 1958.
On February 20, 2006 Esashi was merged with the city of Mizusawa, the towns of Maesawa and Isawa, and the village of Koromogawa, all from Isawa District, to form the new city of Ōshū. The former city is now known as Esashi-ku (not like one of the wards of designated cities see this article (in Japanese) for more info).