| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 561 | Enda | Irish | Name of a saint. | M | |
| 562 | Eneas | Irish | Variant of Aeneas: Praise. | M | |
| 563 | Enos | Irish | One vigor. | M | |
| 564 | Eochaidh | Irish | Horseman. | M | |
| 565 | Eoghan | Irish | God's gift. From a Gaelic word for youth. Also a variant of Eugene. | M | |
| 566 | Eoin | Irish | God is good; God's gift. | M | |
| 567 | Eoin Baiste | Irish | Form of John the Baptist. | M | |
| 568 | Erc | Irish | Red. | M | |
| 569 | Erin | Irish | An ancient and poetic name for Ireland. Famous bearer: Erin from the American television series 'The Waltons'. | M | |
| 570 | Ernan | Irish | Wise one. | M | |
| 571 | Eth | Irish | Fire. | M | |
| 572 | Euan | Irish | Possibly a variant of John. | M | |
| 573 | Euston | Irish | Heart. | M | |
| 574 | Evin | Irish | Swift. | M | |
| 575 | Evoy | Irish | Blond. | M | |
| 576 | Ewan | Irish | Variant of Eoghan: God's gift. From a Gaelic word for youth. Also a variant of Eugene. | M | |
| 577 | Ewen | Irish | Variant of Eoghan: God's gift. From a Gaelic word for youth. Also a variant of Eugene. | M | |
| 578 | Fachnan | Irish | Name of a saint. | M | |
| 579 | Fagan | Irish | Eager child. | M | |
| 580 | Fagin | Irish | Variant of Fagan: Eager child. | M | |