| Moridunum | |
|---|---|
&sq=Envato&lang=en&file=File:Amphitheatre_Moridunum_-_geograph.org.uk_-_777546.jpg) Roman amphitheatre at Carmarthen | |
&sq=Envato&lang=en&file=File:Carmarthenshire_UK_location_map.svg)  Location in Carmarthenshire | |
| Alternative name(s) | Moridunum Demetarum |
| Known also as | Carmarthen |
| Founded | c. 75 AD |
| Place in the Roman world | |
| Province | Britannia |
| Structure | |
| — Stone structure — | |
| Location | |
| Coordinates | 51°52′N 4°19′W / 51.86°N 4.31°W |
| Town | Carmarthen |
| County | Carmarthenshire |
| Country | Wales |
| Reference | |
| UK-OSNG reference | SN4020 |
Moridunum was a Roman fort and town in the Roman province of Britannia. Today it is known as Carmarthen, located in the Welsh county of Carmarthenshire (formerly in the county of Dyfed).