| Irving | | UR-ving (English, Scottish) | English, Scottish, Jewish | |
| Isa (1) | | - | Arabic | |
| Isa (2) | | EE-sah: (Dutch) | German, Dutch, Italian, Spanish | |
| Isa (3) | | - | Frisian, Ancient Germanic | |
| Isaac | | IE-zək (English) | English, Jewish, Biblical, Biblical Latin | |
| Isaak | | ee-SAH-ahk (Russian) | Russian, German, Biblical Greek | |
| Isaaku | | - | Old Church Slavic | |
| IsabÈL | | - | Occitan | |
| Isabel | | ee-sah-BEL (Spanish), IZ-ə-bel (English), ee-za-BEL (French), ee-zah-BEL (German) | Spanish, Portuguese, English, French, German | |
| Isabella | | ee-zah-BEL-lah (Italian), iz-ə-BEL-ə (English) | Italian, German, English, Swedish, Norwegian, Danish, Dutch, Romanian | |
| Isabelle | | ee-za-BEL (French), IZ-ə-bel (English), ee-sah-BEL-lə (Dutch) | French, English, German, Dutch | |
| Isaiah | | ie-ZAY-ə (English), ie-ZIE-ə (English) | English, Jewish, Biblical | |
| Isaias | | - | Biblical | |
| Isaija | | - | Serbian, Macedonian | |
| 'Isam | | - | Arabic | |