I
| English Name | Other name(s) or older name(s) |
|---|---|
| Ipeľ | Eipel (German), Ipeľ or Jupoľ (Slovak), Ipola (Czech), Ipoly (Hungarian) |
| Isar | Isara (Latin), Isar (German), Izar - Изар (Russian), Izara (Polish) |
| Isère | Isara (Latin), Isère (French), Izera (Polish) |
| Inn | Aenus / Oenus (Latin), En (Romansh), Eno (Italian), Inn (German), Inn - Инн (Russian), Aenos - Αινος (Ancient Greek) |
Read more about this topic: List Of European Rivers With Alternative Names