| Country: | Wales |
| Official Name: | Treflys |
| Coordinates: | 52.145°N -3.605°W |
| Cardiff Distance Mi: | 49.9 |
| Cardiff Distance Km: | 80.4 |
| London Distance Mi: | 154.4 |
| London Distance Km: | 248.5 |
| Unitary Wales: | Powys |
| Community Wales: | Treflys |
| Post Town: | LLANGAMMARCH WELLS |
| Postcode District: | LD4 |
| Postcode Area: | LD |
| Post Town1: | LLANWRTYD WELLS |
| Postcode District1: | LD5 |
| Postcode Area1: | LD |
| Os Grid Reference: | SN 903 508 |
| Population: | 484 |
Treflys is a community in the county of Powys, Wales, and is 49.9 miles (80.4 km) from Cardiff and 154.4 miles (248.5 km) from London.[1] [2] In 2011 the population of Treflys was 484 with 15.1% of them able to speak Welsh.[3] It is in the historic county of Brecknockshire.
The villages of Beulah, Llanfechan and Garth lies within the community. Eglwys Oen Duw is a Grade II* Listed Building situated between Beulah and Abergwesyn, approximately 1.2 km NW of Beulah village.[4] Treflys, in the Middle Ages was a "Cwmwd" within the Cantref of Buellt.
For elections to Powys County Council, Treflys is covered by the Llanwrtyd Wells electoral ward.