Indonesian Archipelago in the context of "Nicobar pigeon"

An archipelago (/ˌɑːrkəˈpɛləɡoʊ/ AR-kə-PEL-ə-goh), sometimes called an island group or island chain, is a chain, cluster, or collection of islands. An archipelago may be in an ocean, a sea, or a smaller body of water. Examples of archipelagos include the Aegean Islands (the origin of the term), the Canadian Arctic Archipelago, the Stockholm Archipelago, the Malay Archipelago (which includes the Indonesian and Philippine Archipelagos), the Lucayan (Bahamian) Archipelago, the Japanese archipelago, and the Hawaiian Archipelago.

The East Indies (or simply the Indies) is a term used in historical narratives of the Age of Discovery. The Indies broadly referred to various lands in the East or the Eastern Hemisphere, particularly the islands and mainlands found in and around the Indian Ocean by Portuguese explorers, soon after the Cape Route was discovered. In a narrow sense, the term was used to refer to the Malay Archipelago, which today comprises the Philippine Archipelago, Indonesian Archipelago, Borneo, and New Guinea. Historically, the term was used in the Age of Discovery to refer to the coasts of the landmasses comprising the Indian subcontinent and the Indochinese Peninsula along with the Malay Archipelago.

The Greater Sunda Islands (Indonesian and Malay: Kepulauan Sunda Besar) are four tropical islands situated within the Indonesian Archipelago, in the Pacific Ocean. The islands, Borneo, Java, Sulawesi and Sumatra, are internationally recognised for their ecological diversity and rich culture. Together with the Lesser Sunda Islands to their southeast, they comprise the archipelago known as the Sunda Islands.

Mainly part of Indonesia, each island is diverse in its ethnicity, culture and biological attributes. The islands have a long and rich history which has shaped their cultural backgrounds.

Nusantara is the Indonesian name of Maritime Southeast Asia (or parts of it). It is an Old Javanese term that literally means "outer islands". In Indonesia, it is generally taken to mean the Indonesian Archipelago. Outside of Indonesia, the term has been adopted to refer to the Malay Archipelago.

The word Nusantara is taken from an oath by Gajah Mada in 1336, as written in the Old Javanese Pararaton. Gajah Mada was a powerful military leader and prime minister of Majapahit credited with bringing the empire to its peak of glory. Gajah Mada delivered an oath called Sumpah Palapa, in which he vowed not to eat any food containing spices until he had conquered all of Nusantara under the glory of Majapahit.The concept of Nusantara as a unified region was not invented by Gajah Mada in 1336. The term Nusantara was first used by Kertanegara of Singhasari in Mula Malurung inscription dated 1255. Furthermore, in 1275, the term Cakravala Mandala Dvipantara was used by him to describe the aspiration of united Southeast Asian archipelago under Singhasari and marked the beginning of his efforts to achieve it. Dvipantara is a Sanskrit word for the "islands in between", making it a synonym to Nusantara as both dvipa and nusa mean "island". Kertanegara envisioned the union of Southeast Asian maritime kingdoms and polities under Singhasari as a bulwark against the rise of the expansionist Mongol-led Yuan dynasty of China.

Sri Lankan Malays (Sinhala: (ශ්‍රී ලංකා) මැලේ ජනතාව Shri Lanka Mæle Janathava (Standard); මැලේ මිනිස්සු / ජා මිනිස්සු Mæle Minissu / Ja Minissu (Colloquially); Tamil: இலங்கை மலாயர், romanized: Ilaṅkai Malāyar), historically known as Ceylon Malays, are Sri Lankan citizens with full or partial ancestry from the Indonesian Archipelago, Malaysia, or Singapore.

The term is a misnomer, as it is used as a historical catch-all for all native ethnic groups of the Malay Archipelago who reside in Sri Lanka; it does not apply solely to the ethnic Malays. Sri Lankan Malays are primarily of Javanese, Ambonese, Bandanese, Balinese, Madurese, Malay, Bugis, and Peranakan Chinese descent. They number approximately 40,000 and make up 0.2% of the Sri Lankan population.

The Kangean Islands, also known as the Kangean Archipelago (Kangean: Kapoloan Kangayan) are the group of islands within the Lesser Sunda Islands complex of Indonesian Archipelago located in the northern Bali Sea. It comprises a total of 118 islands (27 inhabited islands), with the Kangean Island as the main and biggest island in the region.

The Sunda Islands (Indonesian: Kepulauan Sunda; Tetun: Illa Sunda) are a group of islands in the Nusantara (Indonesian Archipelago). They consist of the Greater Sunda Islands and the Lesser Sunda Islands.