| Imogene | | IM-ə-jeen | English | |
| Ina | | EE-nə (English), IE-nə (English), EE-nah (Swedish, Dutch, Limburgish) | English, German, Swedish, Norwegian, Danish, Dutch, Limburgish, Croatian | |
| India | | IN-dee-ə | English | |
| Indiana | | in-dee-AN-ə | English | |
| Indigo | | IN-di-go | English (Rare) | |
| Inez | | - | English | |
| Ingram | | ING-grəm | English | |
| Inigo | | IN-i-go | English (Rare) | |
| Iola | | - | English | |
| Iona (1) | | ie-ON-ə (English) | English, Scottish | |
| Ione | | ie-O-nee (English), IE-o-nee (English), ie-ON (English) | Greek Mythology, English | |
| Ira (1) | | IE-rə (English) | Biblical, English, Hebrew | |
| Ireland | | IER-lənd | English (Modern) | |
| Irene | | ie-REEN (English), ie-REE-nee (English), ee-RE-ne (Italian), EE-re-ne (Finnish), ee-RE-nu (German) | English, Italian, Spanish, Portuguese, Swedish, Norwegian, Danish, Finnish, German, Ancient Greek (L | |
| Iris | | IE-ris (English), EE-ris (German, Dutch), EE-rees (Finnish, Spanish) | Greek Mythology, English, German, Dutch, Swedish, Norwegian, Danish, Finnish, French, Spanish | |