| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Isingoma | - | Eastern African, Ganda | ||
| Iskandar | - | Arabic, Indonesian, Malay | ||
| Iskra | - | Bulgarian, Macedonian, Croatian, Serbian | ||
| Isla | IE-lə | Scottish | ||
| Islambek | - | Chechen | ||
| Islay | IE-lə | Scottish | ||
| Ismael | - | Spanish, Biblical Greek | ||
| Ismahel | - | Biblical Latin | ||
| Ismail | - | Arabic, Uyghur | ||
| Isma'il | - | Arabic | ||
| 'Ismat | - | Arabic | ||
| Isobel | - | Scottish | ||
| Isocrates | - | Ancient Greek (Latinized) | ||
| Isokrates | - | Ancient Greek | ||
| Isolda | i-ZOL-də (English), i-SOL-də (English) | Arthurian Romance |