one of the northernmost of a line of Indonesian islands stretching southward along the western coast of the island of Halmahera to the Bacan Islands (Bacan) east of the Molucca Sea. Ternate Island, which lies within North Maluku propinsi (province), is situated 14 miles (23 km) west of Halmahera. The island is dominated by a volcano (5,646 feet 【1,721 metres】) with three peaks. It has suffered from frequent volcanic activity since the 15th century, the worst eruption occurring in 1763. The southern and eastern coasts of Ternate Island have forests and luxuriant vegetation. Rice, corn (maize), sage, coffee, pepper, nutmeg, and fruit are grown. Ternate town, which is the capital and main commercial centre of North Maluku propinsi, includes about half of the population of Ternate Island.

The people are ethnically mixed but probably largely of Malay ancestry. Most are Muslims, though some are Christians; the island has a language of its own, written in Arabic script. Although once a leading centre of clove cultivation, the island now trades principally in nutmeg and copra.

Ternate was the first part of the Moluccas to accept Islām, and it was an important sultanate from the 12th to the 17th century. The initial Western visitor, a Portuguese, came in 1512; other Portuguese followed to ship cloves and construct a fort (1522). In time the Ternate people conquered the fort and expelled the Portuguese (1574), and in 1606 the sultan signed a treaty with the Dutch and granted them a spice monopoly. Restriction of production to maintain high prices led to revolts in 1650 and 1679 and the end of clove production in the northern Moluccas. The sultan became a vassal of the Dutch East India Company, and the Dutch assumed executive power on the island until the establishment of the Republic of Indonesia after World War II.

In the late 1990s violence erupted between Muslims and Christians in the region, causing tens of thousands of Christians to flee Ternate. Their former communities were occupied, in turn, by large numbers of Muslims who had fled similar violence on Halmahera Island. Area 41 square miles (106 square km). Pop. (1971) 50,558; (2000 est.) 155,000.