| Averill | | - | English (Rare) | |
| Avice | | AY-vis | English (Rare) | |
| Avril | | av-REEL (French), AV-ril (English) | French (Rare), English (Rare) | |
| Aylmer | | - | English (Rare) | |
| Azalea | | ə-ZAY-lee-ə, ə-ZAYL-yə | English (Rare) | |
| Azura | | a-ZHUR-ə, AZH-rə | English (Rare) | |
| Azure | | A-zhər | English (Rare) | |
| Balfour | | - | English (Rare) | |
| Barclay | | - | Scottish, English (Rare) | |
| Barnabas | | BAHR-nah-bahs (German), BAHR-nə-bəs (English) | German, English (Rare), Biblical, Biblical Latin, Biblical Greek | |
| Barret | | BAR-ət | English (Rare) | |
| Beatrix | | BE-ah-triks (German), BAY-ah-triks (Dutch), BEE-ə-triks (English) | German, Hungarian, Dutch, English (Rare), Late Roman | |
| Beaumont | | BO-mahnt | English (Rare) | |
| Beauregard | | BO-rə-gahrd | English (Rare) | |
| Berry (2) | | BER-ee | English (Rare) | |