The Territory of Christmas Island is a territory of Australia in the Indian Ocean. It is 2,600 kilometres (1,600 mi) northwest of the Western Australian city of Perth, 360 km (220 mi) south of the Indonesian capital, Jakarta, 975 km (606 mi) ENE of the Cocos (Keeling) Islands, and 2,748 km (1,708 mi) west of the Territorian city of Darwin.

Christmas Island has a population of 1,403 residents who live in a number of "settlement areas" on the northern tip of the island: Flying Fish Cove (also known as Kampong), Silver City, Poon Saan, and Drumsite.

The island’s geographic isolation and history of minimal human disturbance has led to a high level of endemism among its flora and fauna, which is of significant interest to scientists and naturalists. 63% of its 135 square kilometres (52 sq mi) is an Australian national park. There exist large areas of primary monsoonal forest.

Phosphate, deposited originally as dead marine organisms (not guano as often thought), has been mined on the island for many years.