Fitzroy Island National Park, National park on Fitzroy Island, Queensland, Australia

Fitzroy Island National Park is a protected area on an island off the coast of Queensland, Australia, about 19 miles (30 km) from Cairns. The island is built around a granite core covered by tropical rainforest, open forest, mangroves, and coral reefs along the shore.

Lieutenant James Cook named the island in 1778 after the family name of the Duke of Grafton, British Prime Minister when Cook's ship HMB Endeavour set sail. In 1876 a quarantine station was established there for Chinese labourers bound for the Palmer River goldfields. The island later served as part of an Aboriginal mission in the early 1900s and as an artillery gun emplacement in World War II.

The Gungandji people called this island Gabar and used its land and sea for food and shelter across many generations. Some walking trails pass through areas where this long connection to the land is still quietly present.

Fitzroy Island is reached by the Fitzroy Flyer, a motor catamaran leaving from Marlin Marina in Cairns; the crossing takes about 60 minutes and covers roughly 30 km. Most visitors stay on the sheltered western side, where the jetty, the resort and the best snorkelling are found. Much of the island is off-limits under the Nature Conservation Act 1992, so keep to the marked trails.

The fringing reef starts at Bird Rock at the northern end of Welcome Bay and runs almost to the jetty, then resumes at the southern rocks and continues around the corner to Nudey Beach, where it lies just a few steps from the shore. The 4 km passage separating the island from the mainland makes box jellyfish unlikely, though they have occasionally been found.