Araucaria columnaris, the Coral reef araucaria, is a unique species of conifer in the Araucariaceae family. It is endemic to New Caledonia in the southwestern Pacific. It is a distinctive narrowly conical tree to 60 metres (200 ft) tall. The female cone is 10-15 cm. long by 7-11 cm. wide.

Araucaria columnaris is among the most common Araucarias planted as an ornamental tree and street tree in warm temperate climates. It is cultivated in gardens and public landscapes in Queensland, northern New Zealand, southern California, Mexico, and Hawaii.