is a Japanese name which historically referred to the lands to the north of Japan. It was used in various senses, sometimes meaning the northern Japanese island of Hokkaido, and sometimes meaning lands and waters farther north in the Sea of Okhotsk, like Sakhalin and the Kuril Islands. The word "Ezo" can also refer to the peoples that the Japanese encountered in these lands, referred to in modern times as the Ainu people.

EZO is the American self-titled debut album from the Japanese metal band Ezo. It was released in 1987 on Geffen Records and co-produced by Gene Simmons of KISS fame. Songwriters from the Kiss’ entourage contributed heavily to the songs of the album. Jody Gray, co-writer of Destroyer, co-wrote and co-produced the 2nd album, Fire Fire (Geffen).