Kunisaki (国東市, Kunisaki-shi) is a small coastal city located in Ōita Prefecture, Kyushu, Japan.

After the Meiji restoration, the village of Kunisaki within Higashikunisaki District, Ōita was established on May 1, 1889 with the creation of the modern municipalities system.

[7] Kunisaki has a mayor-council form of government with a directly elected mayor and a unicameral city council of 18 members.

In terms of national politics, the city is part of the Ōita 3rd district of the lower house of the Diet of Japan.

The main industry is agriculture, including fruit and vegetable cultivation and commercial fishing.