• 26 places
  • Checked October 2026

Indonesia Map Quiz

Tap the island, sea or strait each question names.

Indonesia Map Quiz

Name Date

Tap this on the map: Borneo

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Write the name of each numbered place.Answer key

  1. Sumatra
  2. Java
  3. Borneo
  4. Sulawesi
  5. New Guinea
  6. Bali
  7. Lombok
  8. Sumbawa
  9. Flores
  10. Sumba
  11. Timor
  12. Madura
  13. Bangka
  14. Belitung
  15. Halmahera
  16. Seram
  17. Buru
  18. Indian Ocean
  19. Java Sea
  20. Strait of Malacca
  21. Makassar Strait
  22. Celebes Sea
  23. Banda Sea
  24. Molucca Sea
  25. Timor Sea
  26. Arafura Sea

Drawn for this site from Natural Earth 5.1.2. Licence: public domain.

Each place is a button. Use the arrow keys to move between them and Enter to choose. Names are read out in Study, and once a place is answered.

Next step Put the borders back: East and Southeast AsiaEvery physical map quiz

All 26 places on the diagram

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The big islands 5

  1. Sumatra The largest island that lies wholly inside Indonesia.
  2. Java Jakarta, the capital, is on its northwest coast.
  3. Borneo Shared with Malaysia and Brunei; Indonesia's part is called Kalimantan.
  4. Sulawesi An island of four long peninsulas, east of Borneo. Its older name is Celebes.
  5. New Guinea Indonesia holds the western half, Papua New Guinea the eastern.

Smaller islands 12

  1. Bali A small island and province just east of Java.
  2. Lombok East of Bali, in West Nusa Tenggara province.
  3. Sumbawa In the middle of the chain, between Lombok and Flores.
  4. Flores A long island east of Sumbawa and north of Sumba.
  5. Sumba South of Sumbawa and Flores, facing the Indian Ocean.
  6. Timor The west is Indonesian; the east is the country East Timor (Timor-Leste).
  7. Madura A small island off Java's northeast coast.
  8. Bangka Off the east coast of Sumatra, long mined for tin.
  9. Belitung East of Bangka, in the Java Sea. Its old name was Billiton.
  10. Halmahera The largest of the Maluku Islands, in North Maluku province.
  11. Seram A long island of Maluku province, east of Buru.
  12. Buru West of Seram, in Maluku province.

Seas and straits 9

  1. Indian Ocean The open ocean south and west of Sumatra and Java.
  2. Java Sea The shallow sea between Java and Borneo.
  3. Strait of Malacca The narrow water between Sumatra and the Malay Peninsula.
  4. Makassar Strait The strait between Borneo and Sulawesi.
  5. Celebes Sea North of Sulawesi and south of the Philippines. Also called the Sulawesi Sea.
  6. Banda Sea South of Buru and Seram, among the Maluku Islands.
  7. Molucca Sea Between Sulawesi and Halmahera.
  8. Timor Sea Between Timor and Australia.
  9. Arafura Sea Between New Guinea and Australia.

How this list was compiled: Names and outlines: Natural Earth 5.1.2 physical and marine layers (credited under the drawing); where one island or sea lies in relation to another is read from that drawing. Every name and detail line was also read on 2026-10-02 in the opening of the feature's English Wikipedia article (linked from each item). Third text for the islands: Indonesia: a country study, Federal Research Division, Library of Congress, 6th edition 2011 (public domain), chapter 2, Geographic Regions, https://archive.org/details/indonesiacountry00fred, read 2026-10-02: five main islands (Sumatra, Java, Kalimantan, Sulawesi and Papua); Kalimantan, also known as Borneo, shared with Malaysia and Brunei; New Guinea shared with Papua New Guinea, the western half Indonesian; Timor divided between Timor-Leste and Indonesia's Nusa Tenggara Timur province; Madura a small island near Java's northeast coast; tin mining on Bangka and Belitung in the Java Sea off the southeastern coast of Sumatra; Flores between Bali and Timor; Bali, Lombok and Sumbawa; Halmahera in the Malukus, and Seram named among the islands; the Sulawesi Sea (Celebes Sea); Jakarta's port on Java. Buru is not named in that book: GeoNames lists Pulau Buru as an island of Maluku, Indonesia (https://www.geonames.org/search.html?q=Buru&country=ID, read 2026-10-02). Sumatra as the largest island wholly inside Indonesia: Wikipedia, Sumatra, and the areas of the Natural Earth shapes (only Borneo and New Guinea, both shared, are larger). Halmahera as the largest of the Maluku Islands: Wikipedia, Halmahera, and the areas of the Natural Earth shapes. Jakarta on Java's northwest coast: Wikipedia, Java and Jakarta, and Natural Earth's populated places, which mark Jakarta as the national capital at 6.2 S 106.8 E. Licence: own work

The drawing: Drawn for this site from Natural Earth 5.1.2, ne_10m_geography_regions_polys (scale 1:10,000,000), https://raw.githubusercontent.com/nvkelso/natural-earth-vector/v5.1.2/geojson/ne_10m_geography_regions_polys.geojson, downloaded 2026-09-19; from Natural Earth 5.1.2, ne_50m_geography_marine_polys (scale 1:50,000,000), https://raw.githubusercontent.com/nvkelso/natural-earth-vector/v5.1.2/geojson/ne_50m_geography_marine_polys.geojson, downloaded 2026-09-19; from Natural Earth 5.1.2, ne_10m_geography_marine_polys (scale 1:10,000,000), https://raw.githubusercontent.com/nvkelso/natural-earth-vector/v5.1.2/geojson/ne_10m_geography_marine_polys.geojson, downloaded 2026-09-19. Surrounding land from Natural Earth 5.1.2, ne_10m_admin_0_countries_lakes (scale 1:10,000,000), https://raw.githubusercontent.com/nvkelso/natural-earth-vector/v5.1.2/geojson/ne_10m_admin_0_countries_lakes.geojson, downloaded 2026-09-19. Lambert azimuthal equal-area projection centred on 2°S 118.3°E. Outlines simplified; small islands are left out. Licence: public domain (Natural Earth terms of use: https://www.naturalearthdata.com/about/terms-of-use/)

How it works

This Indonesia map quiz asks the main islands of the archipelago, from Sumatra in the west to New Guinea in the east, and the seas and straits between them. Country borders are not drawn.

Read the full guide

Three rounds, big islands first

The quiz starts with the five big islands: Sumatra, Java, Borneo, Sulawesi and New Guinea. The second round zooms in on twelve smaller islands, from Bali east to Timor and north to Halmahera. The last round asks the Indian Ocean and eight seas and straits. Bali, Lombok, Madura and Belitung are small, so each also has a ring, and a tap on the ring counts.

Shared islands

The map shows whole islands. Borneo is shared with Malaysia and Brunei; Indonesia's part is called Kalimantan, which counts as a typed answer. The eastern half of New Guinea is Papua New Guinea and runs off the edge of the map. The eastern half of Timor is the country of East Timor.

  • East from Java the chain runs Bali, Lombok, Sumbawa, Flores. Sumba and Timor lie south of it.
  • Bangka is the island nearer Sumatra. Belitung is the smaller one to its east.
  • The Makassar Strait runs between Borneo and Sulawesi, the Strait of Malacca between Sumatra and the Malay Peninsula.

Questions and answers

What are the five main islands of Indonesia?

Sumatra, Java, Kalimantan, Sulawesi and Papua. Kalimantan is the Indonesian part of Borneo, and Papua is the western half of New Guinea. Jakarta, the capital, is on Java.

Which islands does Indonesia share with other countries?

Three of its large islands. Borneo is shared with Malaysia and Brunei, New Guinea with Papua New Guinea, and Timor with East Timor, also called Timor-Leste.

What is the largest island in Indonesia?

New Guinea is the largest island Indonesia has a part of, and Borneo is next. Sumatra is the largest island that lies wholly inside Indonesia.

Is Bali part of Indonesia?

Yes. Bali is an island and a province of Indonesia. It lies just east of Java, west of Lombok.

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