Neuadd Idris
| Old Market Hall | |
|---|---|
| Native name Neuadd Idris (Welsh) | |
Old Market Hall | |
| Location | Eldon Square, Dolgellau |
| Coordinates | 52°44′33″N 3°53′09″W / 52.7424°N 3.8858°W |
| Built | 1870 |
| Architect | William Henry Spaull |
| Architectural style(s) | Neoclassical style |
Listed Building – Grade II | |
| Official name | Neuadd Idris (former Market Hall) |
| Designated | 19 June 1990 |
| Reference no. | 4963 |
The Old Market Hall (Welsh: Neuadd Idris) is a municipal building in Eldon Square, Dolgellau, Gwynedd, Wales. The structure, which is now the home to the National Centre for Folk Music, known as Tŷ Siamas, is a Grade II listed building.