List of archipelagos by number of islands, islets, reefs, coral reefs and cays:
| Name of the archipelago | Number of islands, islets, reefs, coral reefs and cays | Location (total number of islands) | |
|---|---|---|---|
| Archipelago Sea (Åland Archipelago) | 50,000 (Approx.) | ||
| 36,563 | |||
| Stockholm Archipelago | 34,316 | ||
| 30,000 (approx.) | |||
| 25,000 (approx.) | Indonesia, Philippines, Southeast Asia | ||
| Indonesian Archipelago | 17,000–18,000 (approx.) | Indonesia | |
| 14,632[1] | |||
| Småland archipelago | 12,740 | Swedish East Coast Archipelago (21,628) | |
| Öregrund archipelago | 9,722 | Sweden | |
| 8,888 | |||
| 7,641[2] | Philippines | ||
| 6,500 | |||
| 6,289 | |||
| 5,371 | |||
| Bahama Archipelago (Lucayan Archipelago) | 3,200 | ||
| Japanese archipelago | 6,852[3] | Japan | |
| Seto Inland Sea | 3,000 | Japan | |
| Great Barrier Reef | 2,900 (reefs), 900 (islands) | Queensland, Australia | |
| Chile | 43,471[4] | Chile | |
| Ha Long Bay | 1,960–2,000 | Quảng Ninh Province, Vietnam | |
| Thousand Islands | 1,864 | Saint Lawrence River, Canada–United States border | |
| 1,390 (islands) | China (5,000) | ||
| 1,200 | |||
| 1,192 (coral islands) | |||
| 1,100 | |||
| 900[5] | |||
| Mergui Archipelago | 800 | Myanmar | |
| Falkland Islands | 776[6] | Falkland Islands, United Kingdom | |
| 600 | |||
| 105[7] |