The Kasaoka Islands (笠岡諸島 Kasaoka Shotō) are a group of 31 islands in the Seto Inland Sea of Okayama Prefecture. They are part of the city of Kasaoka.
The seven inhabited islands in the group are:
Coordinates: 34°26′28″N 133°23′43″E / 34.44111°N 133.39528°E