Aoshima (青島 Aoshima) is an island located in Miyazaki, Miyazaki Prefecture, Japan. The island has a surface area of 4.4 hectares and a height of 6 meters. The Aoshima Subtropical Botanical Garden is located on the island as well as Aoshima Shrine.
One of the prominent features of the island is that it is surrounded by unique rock formations referred to as the "Ogre's Washboard" (鬼の洗濯板 - Oni no Sentakuita).