Green Island National Park is a protected area declared over a small (12 ha) coral cay of Green Island, Cairns Region, Queensland, Australia.

[2] It is 27 km offshore from Cairns (1394 km northwest of Brisbane), Queensland, can be accessed by a choice of boats leaving daily from Cairns, and is reputed to be the most visited (popular) island National Park within the Great Barrier Reef World Heritage Area.

The island is covered in tropical vine forest which supports a diversity of birds and insects.

[2] While exploring the east coast in 1770, Lieutenant James Cook recorded on his chart "a low green woody island" and named the island after his ship's astronomer, Charles Green.

A small luxury resort is built on the island with daily ferry services providing access.