| Name | Meaning | Gender | Origin |
| Iphegenia | Daughter sacrificed by Agamemnon. | F | Greek |
| Iphicles | Twin of Hercules. | M | Latin |
| Iphides | Hercules' twin brother. | M | Greek |
| Iphigenia | Mythological Creature | F | Greek |
| Iphigenie | Mythical Creature | F | French |
| Iphimedeia | Daughter of Triopas. | F | Latin |
| Iphinome | Amazon. | F | Latin |
| Iphis | Hanged himself over unrequited love. | M | Greek |
| Iphitus | Brother of Iole. | M | Greek |
| Ipo | Darling | F | Hawaiian |
| Iqbaal | Variant of Iqbal: Prosperity. Wealth. | M | Muslim |
| Iqbal | Prosperity. Wealth. | M | Muslim |
| Iqtidaar | Variant of Iqtidar: Capability. Power. | M | Muslim |
| Iqtidar | Capability. Power. | M | Muslim |
| Ir | Watchman; city; vision | M | Biblical |
| Ira | Watchful/ Descendant | M | Hebrew |
| Irad | Wild ass/ heap of empire/ dragon. | M | Biblical |
| Iram | Shining | M | Hebrew |
| Iras | Antony and Cleopatra'. Lady attending on Cleopatra. | F | Shakespearean |
| Iratze | Reference to the Virgin Mary. | F | Spanish |
| Irayna | Peace. Greek goddess of peace. | F | Greek |
| Ireland | Homage to Ireland | E | American |
| Iren | Peace | F | Greek |
| Irena | Peace. | F | Greek |
| Irenbend | Iron bend. | M | Anglo-Saxon |
| Irene | Peaceful | F | Greek |
| Irenke | Peaceful. | F | Hungarian |
| Irfaan | Variant of Irfan: Thankfulness. Knowledge. Wisdom. | M | Muslim |
| Irfan | Thankfulness. Knowledge. Wisdom. | M | Muslim |
| Iri | Fire/ light. | M | Biblical |
| Iria | From the name IRIS | F | English |
| Iriana | Peace. Greek goddess of peace. | F | Greek |
| Irijah | The fear of the Lord. | M | Biblical |
| Irina | Peaceful | F | Slavic |
| Irini | Peace. | F | Greek |
| Irinia | Peace. | F | Greek |
| Iris | Colorful/ Rainbow | F | Greek |
| Irisa | Iris | F | English |
| Irish | From Ireland | E | American |
| Irma | Complete one | F | German |
| Irmgard | War goddess. | F | German |
| Irmigard | War goddess. | F | German |
| Irmina | War goddess. | F | German |
| Irmine | War goddess. | F | German |
| Irmuska | War goddess. | F | German |
| Irus | Challenged Odysseus on his return to Ithaca. | M | Greek |
| Irven | White. | M | Celtic |
| Irvetta | Friend of the sea. | F | English |
| Irvette | Friend of the sea. | F | English |
| Irvin | White. | M | Celtic |