The Tudjuh Archipelago (, lit. "Seven Islands")"Kepulauan Tudjuh: Indonesia"
Geographical Names (Information Technology Associates) is a large group of islands in north-western

Indonesia Indonesia, officially the Republic of Indonesia, is a country in Southeast Asia and Oceania, between the Indian Ocean, Indian and Pacific Ocean, Pacific oceans. Comprising over List of islands of Indonesia, 17,000 islands, including Sumatra, ...

, off the west and north-west coast of the island of Borneo in the

South China Sea The South China Sea is a marginal sea of the Western Pacific Ocean. It is bounded in the north by South China, in the west by the Indochinese Peninsula, in the east by the islands of Taiwan island, Taiwan and northwestern Philippines (mainly Luz ...

. Administratively the islands belong to the Riau Islands province of

. The Tudjuh Archipelago consists of four island groups, the Badas Islands, the Tambelan Islands, the

Natuna Islands Natuna Regency is an islands regency located in the northernmost part of the Province of Riau Islands, Indonesia. It contains at least 154 islands, of which 127 of them are reported as uninhabited. This archipelago, with a land area of 1,978.4 ...

, and the

Anambas Islands Anambas Islands Regency () is an island regency (Indonesia), regency in the Riau Islands, Riau Islands Province, Indonesia, located in the Natuna Sea. The regency consists of 255 islands, including five List of outlying islands of Indonesia, out ...

. The south-westernmost extent of the archipelago is .

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