| Irmgard | | EERM-gahrt | German | |
| Irmhild | | EERM-hilt | German | |
| Irmingard | | EER-min-gahrt | German | |
| Irmtraud | | EERM-trowt | German | |
| Irmtrud | | EERM-troot | German | |
| Irmuska | | EER-moosh-kaw | Hungarian (Rare) | |
| Iryna | | ee-RI-nah | Ukrainian | |
| Isa (2) | | EE-sah: (Dutch) | German, Dutch, Italian, Spanish | |
| Isa (3) | | - | Frisian, Ancient Germanic | |
| Isaak | | ee-SAH-ahk (Russian) | Russian, German, Biblical Greek | |
| IsabÈL | | - | Occitan | |
| Isabel | | ee-sah-BEL (Spanish), IZ-ə-bel (English), ee-za-BEL (French), ee-zah-BEL (German) | Spanish, Portuguese, English, French, German | |
| Isabela | | ee-sah-BEL-ah (Spanish) | Spanish, Portuguese, Romanian | |
| Isabell | | ee-zah-BEL | German | |
| Isabella | | ee-zah-BEL-lah (Italian), iz-ə-BEL-ə (English) | Italian, German, English, Swedish, Norwegian, Danish, Dutch, Romanian | |