| Istifa | To choose, to prefer, to give prefer to one over the other. |
| Istakhri | A Shafaee jurist, Abu Saeed Al-Hasan had this name. |
| Israr | Secret, mystery. |
| Israil | Another name of Prophet Yaqub. |
| Israfil | Angel who will blow the Trumpet |
| Isra | Travel by night. |
| Ismat | Purity, chastity, modesty. |
| Ismail | A Prophet, the biblical Ishmael and son of Prophet Ibrahim. |
| Ismah | Preservation; infallibility; A 9th century scholar, ibn Hammad had this name. |
| Islam | To bow ones head in submission, surrender (to the will of Allah) name of the religion of the Muslims. |
| Islah | Reform, improvement, betterment. |
| Iskandar | Name of a Greek king, Alexander. Iskander Mirza: President of Pakistan (1956-58). |
| Iskafi | Iskaf is a shoe-maker. |
| Ishtiyaq | Fondness, wish, desire, yearning, eagerness. |
| Ishrat | Society, Familiar and pleasant talk, happiness. |
| Ishfaq | Compassion, sympathy, pity. |
| Ishaq | One who laughs. A Prophet, the biblical Isaac and son of Prophet Ibrahim. |
| Isfand Yar | Courageous, brave. |
| Isbahani | From Isbahan; quite a few people were kown by this name; Abu Bakr ibn Ashtah, among them; he wrote on the syntax and rhetoric of the Quran |
| Isam | Self-made. |
| Isad | Making happy or prosperous, blessing, favoring. |
| Isaar | Selflessness. |
| Isa | A Prophet, the biblical Jesus. |