| Aurelia | | ow-RE-lyah (Italian), ow-REL-yah (Polish) | Ancient Roman, Romanian, Italian, Spanish, Polish | |
| Aureliano | | ow-re-LYAH-no (Spanish) | Spanish, Italian | |
| Aurelio | | ow-RE-lyo | Italian, Spanish | |
| Aurora | | ow-RO-rah (Spanish), ə-RAWR-ə (English), OW-ro-rah (Finnish) | Italian, Spanish, Portuguese, English, German, Romanian, Finnish, Roman Mythology | |
| Azeneth | | - | Spanish | |
| Azucena | | ah-thoo-THE-nah (Spanish), ah-soo-SE-nah (Latin American Spanish) | Spanish | |
| BÁRbara | | - | Portuguese, Spanish | |
| Balbina | | bahl-BEE-nah (Italian) | Spanish (Rare), Portuguese (Rare), Italian (Rare), Ancient Roman | |
| Balbino | | - | Spanish (Rare), Portuguese (Rare), Italian (Rare) | |
| Baldo | | - | Italian, Spanish, Ancient Germanic | |
| Baldomero | | bahl-do-ME-ro | Spanish | |
| Balduino | | - | Spanish | |
| Baltasar (1) | | bahl-tah-SAHR | Spanish | |
| BartolomÉ | | bahr-to-lo-ME | Spanish | |
| Basilio | | bah-ZEE-lyo (Italian), bah-SEE-lyo (Spanish) | Italian, Spanish | |