Kuroishi Domain was a tozama feudal domain under the Tokugawa shogunate of Edo period Japan. It is located in northwestern Mutsu Province, Honshū. Its territory included 2000 koku in the area around present-day city of Kuroishi, 1000 koku in present-day Hiranani, and 2000 koku in what is now part of Ōta, Gunma. The domain was centered at Kuroishi Jin'ya, located in the center of what is now the city of Kuroishi in Aomori Prefecture.

Kuroishi is a city located in Aomori Prefecture, Japan. As of 31 January 2023, the city had an estimated population of 31,540 in 13948 households and a population density of 150 persons per km2. The total area of the city is 217.05 square kilometers (83.80 sq mi).