| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 1 | Adiran | Basque | From the Adriatic. | M | |
| 2 | Ager | Basque | Gatherer. | M | |
| 3 | Agurtzane | Basque | Refers to the Virgin Mary. | F | |
| 4 | Aingeni | Basque | Messenger. | M | |
| 5 | Ainhoa | Basque | Refers to the Virgin Mary. | F | |
| 6 | Aintzane | Basque | Glory. | F | |
| 7 | Aitziber | Basque | Refers to the Virgin Mary. | F | |
| 8 | Akil | Basque | From the Akil. | M | |
| 9 | Alazne | Basque | Miracle. | F | |
| 10 | Alesandese | Basque | Basque feminine form of Alesander: helper of man. | F | |
| 11 | Alona | Basque | Refers to the Virgin Mary. | F | |
| 12 | Amaia | Basque | End. | F | |
| 13 | Ander | Basque | Basque form of Andrew. | M | |
| 14 | Andere | Basque | Feminine form of Ander. | F | |
| 15 | Anthony | Basque | He adds or priceless. | M | |
| 16 | Antton | Basque | Praiseworthy. | M | |
| 17 | Arama | Basque | Refers to the Virgin Mary. | F | |
| 18 | Argi | Basque | Light. | F | |
| 19 | Arrate | Basque | Refers to the Virgin Mary. | F | |
| 20 | Arrosa | Basque | Rose. | F | |