Starting with letter I
| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 1 | Iachimo | Shakespearean | 'Cymbeline' An Italian friend to Philario. | M | |
| 2 | Iago | Shakespearean | 'The Tragedy of Othello, Moor of Venice' Ensign to Othello. | M | |
| 3 | Iago | Spanish | Supplanter. Spanish form of Jacob. Associated with the wicked Iago in Shakespeare's Othello'. | M | |
| 4 | Iago | Welsh | Supplanter. Can be either a variant of James or Jacob. Associated with the wicked Iago in Shakespeare's Othello'. | M | |
| 5 | Iain | Gaelic | Gaelic form of John. | M | |
| 6 | Iain | Scottish | Scottish variant of Ian: 'Gift from God'. | M | |
| 7 | Ian | Scottish | Gift from God The Gaelic form of the name John. | M | |
| 8 | Iaokim | Hebrew | God will estahlish. | M | |
| 9 | Iasion | Greek | Father of Plutus. | M | |
| 10 | Iau | Welsh | Welsh form of Zeus 'life'. | M | |
| 11 | Ib | Phoenician | Oath of Baol. | M | |
| 12 | Ibhar | Biblical | Election; he that is chosen | M | |
| 13 | Ibneiah | Biblical | The building of the Lord; the understanding of the Lord; son by adoption | M | |
| 14 | Ibraaheem | Muslim | Variant of Ibrahim: The Biblical Abraham is the English language equivalent. A Prophet's name.. | M | |
| 15 | Ibrahim | Arabic | Arabic form of Abraham. | M | |
| 16 | Ibrahim | Muslim | The Biblical Abraham is the English language equivalent. A Prophet's name.. | M | |
| 17 | Ibycus | Greek | A bard. | M | |
| 18 | Ibzan | Biblical | Father of a target; father of coldness | M | |
| 19 | Icarius | Greek | Gave wine to the citizens of Athens who mistook it for poison and killed him. | M | |
| 20 | Icarus | Greek | Son of Daedalus. | M | |