| Sergius of Bulgaria | |
| Patriarch of Bulgaria | |
| Church: | Bulgarian Orthodox Church |
| Enthroned: | c. 931 |
| Ended: | c. 940 |
| Successor: | Gregory |
| Nationality: | Bulgarian |
| Religion: | Eastern Orthodox Church |
Sergius (bg|Сергий) was the third Bulgarian Patriarch of the Bulgarian Orthodox Church.[1]