| Acacia | | ə-KAY-shə | English (Rare) | |
| Ace (1) | | AYS | English | |
| Ada | | AY-də (English), AH-dah (Polish, Finnish) | English, German, Polish, Hungarian, Italian, Finnish | |
| Adair | | ə-DER | English (Rare) | |
| Adalyn | | AD-ə-lin | English (Modern) | |
| Adalynn | | AD-ə-lin | English (Modern) | |
| Adam | | A-dəm (English), a-DAWN (French), AH-dahm (German, Polish), AH:-dahm (Dutch), ah-DAHM (Russian, Ukrainian) | English, French, German, Dutch, Swedish, Norwegian, Danish, Polish, Czech, Slovak, Russian, Ukrainia | |
| Adamina | | a-də-MEE-nə | English (Rare) | |
| Addie | | AD-ee | English | |
| Addison | | AD-i-sən | English | |
| Addy (1) | | AD-ee | English | |
| Addy (2) | | - | Medieval English | |
| Addyson | | AD-i-sən | English (Modern) | |
| Adela | | ə-DEL-ə (English), ah-DE-lah (Polish) | English, Spanish, Romanian, Polish, Ancient Germanic | |
| Adelaide | | AD-ə-layd (English), ah-de-LIE-de (Italian), ə-də-LIED (Portuguese) | English, Italian, Portuguese | |