Starting with letter I
| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 201 | Ioan | Hebrew | Gift from God. | M | |
| 202 | Ioan | Welsh | Welsh form of John 'God's gift'. | M | |
| 203 | Iob | Welsh | Diminutive of Iorwerth: Worthy lord. Derived from 'ior' and 'gwerth'. Legendary son of Maredudd. | M | |
| 204 | Iolo | Welsh | Diminutive of Iorwerth: worthy lord. | M | |
| 205 | Iomar | Gaelic | Archer. | M | |
| 206 | Iomhar | Teutonic | Archer. | M | |
| 207 | Ion | Greek | Son of Apollo. | M | |
| 208 | Iona | Welsh | Legendary king of France. | M | |
| 209 | Ionnes | Hebrew | Gift from God. | M | |
| 210 | Iorgas | Greek | Farmer. | M | |
| 211 | Iorwerth | Welsh | Worthy lord. Derived from 'ior' and 'gwerth'. Legendary son of Maredudd. | M | |
| 212 | Iosep | Hebrew | God will multiply. | M | |
| 213 | Ioseph | Hebrew | God will multiply. | M | |
| 214 | Iov | Hebrew | God will estahlish. | M | |
| 215 | Iov | Russian | From Job. | M | |
| 216 | Iphedeiah | Biblical | Redemption of the Lord. | M | |
| 217 | Iphicles | Latin | Twin of Hercules. | M | |
| 218 | Iphides | Greek | Hercules' twin brother. | M | |
| 219 | Iphis | Greek | Hanged himself over unrequited love. | M | |
| 220 | Iphis | Latin | Lover who hanged himself. | M | |