| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 21 | Aethelhere | Anglo-Saxon | Name of a king. | M | |
| 22 | Aethelred | Anglo-Saxon | Name of a king. | M | |
| 23 | Aethelstan | Anglo-Saxon | Name of a king. | M | |
| 24 | Aethelthryth | Anglo-Saxon | Wife of King Ecgfrith. | F | |
| 25 | Aethelwulf | Anglo-Saxon | Name of a king. | M | |
| 26 | Agiefan | Anglo-Saxon | Gives. | M | |
| 27 | Agilberht | Anglo-Saxon | Name of a bishop. | M | |
| 28 | Aglaeca | Anglo-Saxon | Fighter. | M | |
| 29 | Agyfen | Anglo-Saxon | Gives. | M | |
| 30 | Aheawan | Anglo-Saxon | Cuts down. | M | |
| 31 | Ahebban | Anglo-Saxon | Wages war. | M | |
| 32 | Ahreddan | Anglo-Saxon | Rescues. | M | |
| 33 | Aidan | Anglo-Saxon | Name of a saint. | M | |
| 34 | Aiken | Anglo-Saxon | Oaken. | M | |
| 35 | Aisley | Anglo-Saxon | Dwells at the ash tree meadow. | F | |
| 36 | Aisly | Anglo-Saxon | Dwells at the ash tree meadow. | F | |
| 37 | Albinus | Anglo-Saxon | Name of an abbot. | M | |
| 38 | Alden | Anglo-Saxon | Defender. | M | |
| 39 | Aldfrith | Anglo-Saxon | Name of a king. | M | |
| 40 | Aldhelm | Anglo-Saxon | Name of a bishop. | M | |