is a subprefecture
. The organization belongs to the Tokyo Metropolitan Government Bureau Of General Affairs.
It includes the following villages on the Izu Islands:
Because of the eruptions of the main volcano, Miyakejima was completely evacuated from September 2000. After a four-year period of volcanic emissions, residents were allowed to return permanently on February 1, 2005.
- 1920: The island halls of Miyakejima and Mikurajima were abolished. Ōshima Island Government Office took control of the islands. The branch office was founded on Miyakejima.
- 1926: Changed to Ōshima Subprefecture.
- 1943: Miyakejima Branch Office was split as Miyake Subprefecture.