List of archipelagos by number of islands, islets, reefs, coral reefs and cays:
| Location (total number of islands) | Name of the archipelago | Number of islands, islets, reefs, coral reefs and cays |
|---|---|---|
| Finland | Archipelago Sea | 40,000 (approx.)[1] |
| Canada | Canadian Arctic Archipelago | 36,563 |
| Canada | Thirty Thousand Islands | 30,000 (approx.) |
| Stockholm archipelago, Sweden (34,316[2]) | Stockholm archipelago | 28,945 |
| Southeast Asia | Malay Archipelago | 25,000 (approx.) |
| Indonesia | Indonesian Archipelago | 17,508 – 18,306[3] |
| Canada and United States | Lake of the Woods Islands | 14,632[4] |
| Swedish East Coast Archipelago (21,628[2]) | Småland archipelago | 12,740 |
| Sweden | Öregrund archipelago | 9,722 |
| Sweden | Östergötland archipelago | 8,888 |
| Philippines | Philippine Archipelago | 7,641[5] |
| Finland | Kvarken Archipelago | 6,500 |
| British Isles | British Isles | 6,289 |
| Södermanland archipelago, Sweden | Södermanland archipelago | 5,371 |
| Korea | Korean Peninsula | 3,579 |
| The Bahamas | Bahama Archipelago (Lucayan Archipelago) | 3,200 |
| Japan | Japanese archipelago | 6,852[6] |
| Japan | Seto Inland Sea | 3,000 |
| Queensland, Australia | Great Barrier Reef | 2,900 (reefs), 900 (islands) |
| Chile | Chile | 43,471[7] |
| Quảng Ninh Province, Vietnam | Ha Long Bay | 1,960 – 2,000 |
| Saint Lawrence River, Canada–United States border | Thousand Islands | 1,864 |
| China (5,000) | Zhoushan Archipelago | 1,390 (islands) |
| Thailand | Thailand | 1,430 |
| India | Andaman and Nicobar Islands, Lakshadweep Islands, Coastal India | 1208 |
| Greece | Aegean Sea, Ionian Sea | 1,200 – 6,000 |
| Croatia | Dalmatia | 1,200 |
| Maldives | Maldive Islands | 1,192 (coral islands) |
| United States | Alexander Archipelago | 1,100 |
| Estonia | West Estonian archipelago | 900[8] |
| Italy | Italy | 800 |
| Myanmar | Mergui Archipelago | 800 |
| Falkland Islands, United Kingdom | Falkland Islands | 776[9] |
| New Zealand | New Zealand Archipelago | 600 |
| Turkey | Aegean Sea, Marmara Sea, Black Sea | 500 (approx.) |
This article or section possibly contains synthesis of material which does not verifiably mention or relate to the main topic. (November 2021) |
This list is incomplete; you can help by adding missing items. (December 2010) |