| Altenum | |
|---|---|
&sq=Facebook&lang=en&file=File:Romania_location_map.svg)  Location within Romania | |
| Alternative name(s) | Altinum, Altina |
| Known also as | Castra of Oltina |
| Founded | 4th century AD |
| Abandoned | 6th century AD |
| Place in the Roman world | |
| Province | Scythia Minor |
| Directly connected to | |
| Structure | |
| — Stone structure — | |
| Size and area | (2 ha) |
| Stationed military units | |
| — Alae — | |
| — Classis — | |
| Location | |
| Place name | Dealul Maxinca [2] |
| Town | Oltina |
| County | Constanța |
| Country |  Romania |
| Reference | |
| RO-LMI | CT-I-s-B-02717[3] |
| RO-RAN | 62495.03[2] |
| Site notes | |
| Recognition | &sq=Facebook&lang=en&file=File:Monument_istoric.svg){kind=small} National Historical Monument |
| Condition | Ruined |
Altenum was a fort in the Roman province of Scythia Minor in the 4th and 6th centuries AD.[3]