| # | Name | Origin | Meaning | Gender | Save |
|---|---|---|---|---|---|
| 1561 | Iphimedeia | Latin | Daughter of Triopas. | F | |
| 1562 | Iphinome | Latin | Amazon. | F | |
| 1563 | Iphis | Latin | Lover who hanged himself. | M | |
| 1564 | Iphitus | Latin | Brother of Iole. | M | |
| 1565 | Iris | Latin | Diminutive of Beatrice. A variant of Beatrix meaning bringer of joy. | F | |
| 1566 | Iris | Latin | Diminutive of Beatrice F: A variant of Beatrix meaning bringer of joy. In the Divine Comedy, Beatrice was Dante's guide through Paradise, perhaps inspired by Beatrice Portinari who was Dante's earliest love. | M | |
| 1567 | Irma | Latin | Noble. | F | |
| 1568 | Irmina | Latin | Noble. | F | |
| 1569 | Irmine | Latin | Noble. | F | |
| 1570 | Isabel | Latin | Variant of Elizabeth. My God is bountiful;God of plenty. | F | |
| 1571 | Isabel | Latin | Variant of Elizabeth. 'My God is bountiful;God of plenty.'. | M | |
| 1572 | Iulia | Latin | Young. | F | |
| 1573 | Iulius | Latin | Youthful. | F | |
| 1574 | Iulus | Latin | Son of Aeneas. | M | |
| 1575 | Jacoba | Latin | Supplanter. | F | |
| 1576 | Jacobus | Latin | Supplanter. | M | |
| 1577 | Jana | Latin | The moon. | F | |
| 1578 | Janus | Latin | God of beginnings. | M | |
| 1579 | Jeovani | Latin | Form of Jovan 'Father of the sky.'. | M | |
| 1580 | Jeovanni | Latin | Form of Jovan 'Father of the sky.'. | M | |