Ōmura is a city located in Nagasaki Prefecture, Japan. As of August 1, 2023, the city has an estimated population of 96,508 and a population density of 750 persons per km2. Its total area is 126.33 km2, and it includes Nagasaki Airport.

Nagasaki Prefecture is a prefecture of Japan located on the island of Kyūshū. Nagasaki Prefecture has a population of 1,314,078 and has a geographic area of 4,130 km2. Nagasaki Prefecture borders Saga Prefecture to the northeast.