Ōkunoshima is a small island in the Inland Sea of Japan. It is considered to be part of the city of Takehara, Hiroshima Prefecture. It is accessible by ferry from Tadanoumi and Ōmishima. There are campsites, walking trails and places of historical interest on the island. It is often called Usagi Shima because of the numerous rabbits that roam the island. The rabbits are rather tame and will approach humans.

Takehara is a city located in Hiroshima Prefecture, Japan. As of 30 April 2023, the city had an estimated population of 23,350 in 12034 households and a population density of 200 persons per km2. The total area of the city is 118.23 square kilometres (45.65 sq mi).