| Ichtaca | - | Nahuatl Name | Icnoyotl | - | Nahuatl Name |
| Ihuicatl | - | Nahuatl Name | Ilhuitl | - | Nahuatl Name |
| Ina | - | Chamoru Name | Infinity | - | American Name |
| Ira | - | Hebrew Name | Iri | - | Biblical Name |
| Irie | - | American Name | Irish | - | American Name |
| Ishma | - | Biblical Name | Israel | - | Hebrew Name |
| Issa | - | African Name | Itotia | - | Nahuatl Name |
| Iuitl | - | Nahuatl Name | Ivah | - | Biblical Name |
| Ixtli | - | Nahuatl Name | Izri | - | Biblical Name |
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