| Name |
Location |
Status |
Key Finds |
CIMRM/Other Ref |
Latitude |
Longitude |
Date Discovered |
Notes |
| Latrus | Bulgaria | Confirmed | Small shrine near Danube fort (2019 excavation) | N/A | 43.623 | 25.353 | 2019 | Germania (2021) |
| Mithraeum of Durostorum | Silistra, Bulgaria | Confirmed | Danube frontier altar | - | 44.1167 | 27.2667 | 1972 | Legionary base |
| Mithraeum of Novae | Svishtov, Bulgaria | Confirmed | Military dedications | - | 43.6167 | 25.35 | 1970 | Legionary camp |
| Mithraeum of Odessos | Varna, Bulgaria | Confirmed | Syncretic plaques | - | 43.2067 | 27.9117 | 1980 | Thracian trade hub |
| Mithraeum of Oescus | Gigen, Bulgaria | Confirmed | Mosaic floor | - | 43.7 | 24.4833 | 1950 | Danube port city |
| Mithraeum of Philippopolis | Plovdiv, Bulgaria | Disputed | Broken Tauroctony | - | 42.15 | 24.75 | 2010 | Under modern city |
| Novae | Bulgaria | Confirmed | Tauroctony relief found in Legio I Italica barracks | N/A | 43.623 | 25.353 | 2023 | Michalowski 2023 (JRA) |
| Oescus | Bulgaria | Confirmed | Near legionary bathhouse; benches and altar found | N/A | 43.703 | 24.507 | 2022 | Ruse Museum Report 2023 |