| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 41 | Achimelech | Hebrew | The king is my brother. | M | |
| 42 | Achisar | Hebrew | The prince is my brother. | M | |
| 43 | Achishar | Hebrew | My brother is a song. | M | |
| 44 | Achiya | Hebrew | God is my brother. | M | |
| 45 | Achiyahu | Hebrew | Variant of Achiya: God is my brother. | M | |
| 46 | Adael | Hebrew | God's ornament. | M | |
| 47 | Adaia | Hebrew | Variant of Adaiah: Witness of God. | M | |
| 48 | Adaiah | Hebrew | Witness of God. | M | |
| 49 | Adam | Hebrew | Red, a reference to either the red skin or the red earth of Eden from which the Old Testament Adam was created in Genesis 2. Famous bearer: 7th century Irish St Adamnan, meaning 'little adam', was the biographer of St Columba. | M | |
| 50 | Adamec | Hebrew | Variant of Adam: Man of the red earth. Adam was the first man created by God. | M | |
| 51 | Adamek | Hebrew | Variant of Adam: Man of the red earth. Adam was the first man created by God. | M | |
| 52 | Adamh | Hebrew | Variant of Adam: Man of the red earth. Adam was the first man created by God. | M | |
| 53 | Adamik | Hebrew | Variant of Adam: Man of the red earth. Adam was the first man created by God. | M | |
| 54 | Adamka | Hebrew | Variant of Adam: Man of the red earth. Adam was the first man created by God. | M | |
| 55 | Adamko | Hebrew | Variant of Adam: Man of the red earth. Adam was the first man created by God. | M | |
| 56 | Adamnan | Hebrew | Little Adam, from Adam meaning red, a reference to either the red skin or the red earth from which the Old Testament Adam was created (Genesis 2:7). St Adamnan was a 7th century Irish saint and biographer of St Columba:. | M | |
| 57 | Adams | Hebrew | Variant of Adam: Man of the red earth. Adam was the first man created by God. | M | |
| 58 | Adamson | Hebrew | Son of Adam: Man of the red earth. | M | |
| 59 | Adamsson | Hebrew | Son of Adam: Man of the red earth. | M | |
| 60 | Adan | Hebrew | Son of Adam: Man of the red earth. | M | |