| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 21 | Acidalia | Latin | Named for Venus. | F | |
| 22 | Acis | Latin | Son of Faunus. | M | |
| 23 | Acnes | Latin | Chaste. | F | |
| 24 | Acrisioniades | Latin | Descendant of Acrisius. | M | |
| 25 | Acrisius | Latin | Father of Danae. | M | |
| 26 | Actaeon | Latin | A hunter. | M | |
| 27 | Actaeonis | Latin | A hunter. | M | |
| 28 | Actaeus | Latin | From Athens. | M | |
| 29 | Actor | Latin | Son of Azeus. | M | |
| 30 | Actoris | Latin | Son of Azeus. | M | |
| 31 | Adamina | Latin | Of the red earth. | F | |
| 32 | Adela | Latin | Of the nobility. Noble. | F | |
| 33 | Adelina | Latin | Latinized form of Adeline from the Old German 'athal' meaning noble. | F | |
| 34 | Adeline | Latin | Of the nobility. Noble. | F | |
| 35 | Adok | Latin | Of the Adriatic. | M | |
| 36 | Adolf | Latin | Variant of Adolphus: Latinized form of the Old German Adalwolf' meaning noble wolf. Used by 17th and 18th century German royal families, and introduced into Britain by the Hanoverians. | M | |
| 37 | Adolfo | Latin | Noble wolf. | M | |
| 38 | Adolph | Latin | Variant of Adolphus: Latinized form of the Old German Adalwolf' meaning noble wolf. Used by 17th and 18th century German royal families, and introduced into Britain by the Hanoverians. | M | |
| 39 | Adolphe | Latin | Variant of Adolphus: Latinized form of the Old German Adalwolf' meaning noble wolf. Used by 17th and 18th century German royal families, and introduced into Britain by the Hanoverians. | M | |
| 40 | Adolphus | Latin | Latinized form of the Old German Adalwolf' meaning noble wolf. Used by 17th and 18th century German royal families, and introduced into Britain by the Hanoverians. | M | |