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 and Pacific oceans. It consists of over 17,000 islands, including Sumatra, Java, Sulawesi, and parts of Borneo and New Guine ...

, 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 the shores of South China (hence the name), in the west by the Indochinese Peninsula, in the east by the islands of Taiwan and northwestern Phi ...

. Administratively the islands belong to the

Riau Islands province The Riau Islands ( id, Kepulauan Riau) is a province of Indonesia. It comprises a total of 1,796 islands scattered between Sumatra, Malay Peninsula, and Borneo including the Riau Archipelago. Situated on one of the world's busiest shipping ...

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

Natuna Islands ''(Sacred Ocean, Fortune Land) , image_map = , pushpin_map = Indonesia Riau Islands#Indonesia Sumatra#Indonesia#South China Sea , pushpin_map_caption = Location in Riau Islands##Location in Sumatra##Location in I ...

, and the

Anambas Islands Anambas Islands Regency ( id, Kabupaten Kepulauan Anambas) is a small archipelago of Indonesia, located northeast of Batam Island in the North Natuna Sea between the Malaysian mainland to the west and the island of Borneo to the east. Geograp ...

. The south-westernmost extent of the archipelago is .

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