Natuna Besar is the main island of the Natuna Besar Archipelago, as well as the Natuna Islands

Natuna Islands

The Natuna Islands archipelago is located in the Natuna Sea in the larger Tudjuh Archipelago, off the northwest coast of Borneo. The islands are administratively part of the Riau Islands province of Indonesia and are the northernmost non-disputed island group of Indonesia...

, which are part of the Riau Islands Province, Indonesia

Indonesia

Indonesia , officially the Republic of Indonesia , is a country in Southeast Asia and Oceania. Indonesia is an archipelago comprising approximately 13,000 islands. It has 33 provinces with over 238 million people, and is the world's fourth most populous country. Indonesia is a republic, with an...

. The Natuna archipelago is one of the northernmost island groups of Indonesia. The area of Natuna Besar is 1720 km².

The island of Bunguran is home to three species of non-human primate: the slow loris (Nycticebus coucang), the long-tailed macaque (Macaca fascicularis), and the Natuna leaf monkey (a.k.a. Natuna pale-thighed surili, Presbytis natunae).

Other islands of the Natunas are South Natuna

South Natuna

South Natuna is an archipelago off the west coast of the island of Borneo, the southernmost group of the Natuna Islands in the South China Sea. Geographically it is part of the Tudjuh Archipelago, and administratively part of the Riau Islands province of Indonesia. The archipelago is spread out...

 archipelago and Tambelan archipelago

Tambelan archipelago

Tambelan archipelago is a group of islands off the west coast of West Kalimantan, , Indonesia, just north of the equator. Geographically they are part of the Tudjuh Archipelago, and administratively part of the Riau Islands Province...

.