| Zahari | | - | Bulgarian | |
| Zaharina | | - | Bulgarian, Macedonian | |
| Zaharinka | | - | Bulgarian, Macedonian | |
| Zara (2) | | - | Bulgarian | |
| Zdravko | | - | Croatian, Serbian, Slovene, Bulgarian, Macedonian | |
| Zhaklina | | - | Macedonian, Bulgarian | |
| Zhelyazko | | - | Bulgarian | |
| Zhenya | | - | Russian, Bulgarian | |
| Zhivka | | - | Bulgarian, Macedonian | |
| Zhivko | | - | Bulgarian, Macedonian | |
| Zlatan | | - | Croatian, Serbian, Bosnian, Macedonian, Bulgarian, Slovene | |
| Zlatko | | - | Croatian, Serbian, Slovene, Bulgarian, Macedonian | |
| Zora | | - | Czech, Slovak, Croatian, Serbian, Slovene, Bulgarian, Macedonian | |
| Zorka | | - | Czech, Slovak, Croatian, Serbian, Slovene, Bulgarian, Macedonian | |
| Zornitsa | | - | Bulgarian | |