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| Country (short) | Country (in full) | # of Registered Lake(s) |
|---|---|---|
| Iceland | Republic of Iceland | 1 |
| India | India | 28 |
| Indonesia | Republic of Indonesia | 7 |
| Iran | Islamic Republic of Iran | 4 |
| Iraq | Republic of Iraq | 3 |
| Ireland | Ireland | 2 |
| Israel | State of Israel | 2 |
| Italy | Republic of Italy | 10 |