Isdhoo is an inhabited island in Laamu Atoll administrative division and geographically part of the Haddhunmathi Atoll in the southern part of the Maldives. It is an island-level administrative constituency in south central province, governed by the Isdhoo Island Council.
The mound or Haiytheli on this island is even more impressive than those on Gan island. Strategically placed, the mound was a famous landmark for ancient mariners travelling across the channels between the atolls.
There is also a 300-year-old mosque on the island, probably built upon the foundations of older temples facing the west.