Avoid Island is one of the Flat Isles, within the island chain called the Northumberland Islands, around 20 km (12 mi) off the eastern coast of Queensland, Australia, approximately 100 km (62 mi) south of Mackay. Owned and managed by the Queensland Trust for Nature (QTFN) since 2006, the island is the only privately owned permanent nature refuge in the southern Great Barrier Reef, and is an important breeding location for the vulnerable flatback turtle.