| Adrijan | | - | Croatian, Macedonian | |
| Adrijana | | - | Slovene, Serbian, Croatian, Macedonian | |
| Agata | | ah-GAH-tah (Italian, Spanish, Polish) | Italian, Spanish, Swedish, Polish, Slovene, Russian, Croatian, Serbian | |
| Agneza | | - | Croatian | |
| Ahtahkakoop | | - | Native American, Cree | |
| Aleksandar | | - | Bulgarian, Macedonian, Croatian, Serbian | |
| Aleksandra | | ah-lyek-SAHN-drah (Russian), ah-leek-SAHN-drah (Russian), ahl-ek-SAHN-drah (Polish) | Russian, Ukrainian, Polish, Serbian, Bulgarian, Slovene, Croatian, Macedonian, Estonian | |
| Alen | | AHL-en (Croatian) | Croatian, Slovene | |
| AljoŠA | | - | Slovene, Croatian | |
| Alojz | | - | Slovene, Slovak, Croatian | |
| Alojzija | | - | Slovene, Croatian | |
| Alojzije | | - | Croatian | |
| Amalija | | - | Lithuanian, Slovene, Croatian | |
| Ambrozije | | - | Croatian (Rare) | |
| AnĐA | | - | Croatian, Serbian | |