| Iria | | - | Portuguese, Galician | |
| Irina | | ee-REE-nah (Russian), EE-ree-nah (Finnish) | Russian, Bulgarian, Macedonian, Romanian, Finnish, Georgian | |
| Irinei | | - | Russian | |
| Iriney | | - | Russian | |
| Irinushka | | - | Russian | |
| Iris | | IE-ris (English), EE-ris (German, Dutch), EE-rees (Finnish, Spanish) | Greek Mythology, English, German, Dutch, Swedish, Norwegian, Danish, Finnish, French, Spanish | |
| Irja | | EER-yah | Finnish | |
| Irma | | EER-mah (German, Finnish), UR-mə (English) | German, English, Dutch, Finnish, Spanish, Italian, Georgian, Lithuanian, Hungarian (Rare), Ancient G | |
| Irmak | | - | Turkish | |
| Irune | | - | Basque | |
| Irvin | | UR-vin | English | |
| Irvine | | UR-vien, UR-vin | English, Scottish | |
| Irving | | UR-ving (English, Scottish) | English, Scottish, Jewish | |
| Irwin | | UR-win | English | |
| Isa (2) | | EE-sah: (Dutch) | German, Dutch, Italian, Spanish | |