| Country: | Wales |
| Official Name: | Llandyfrïog |
| Static Image: | Phone box at Llandyfriog - geograph.org.uk - 922351.jpg |
| Coordinates: | 52.0453°N -4.4348°W |
| Cardiff Distance Mi: | 66.5 |
| Cardiff Distance Km: | 107.1 |
| London Distance Mi: | 187.8 |
| London Distance Km: | 302.3 |
| Unitary Wales: | Ceredigion |
| Community Wales: | Llandyfriog |
| Constituency Westminster: | Ceredigion Preseli |
| Post Town: | NEWCASTLE EMLYN |
| Postcode District: | SA38 |
| Postcode Area: | SA |
| Post Town1: | LLANDYSUL |
| Postcode District1: | SA44 |
| Postcode Area1: | SA |
| Dial Code: | The community includes |
| Os Grid Reference: | SN 3312 4134 |
| Population: | 1835 |
Llandyfriog is a community in Ceredigion, Wales. It includes the Adpar part of Newcastle Emlyn and the villages, Bangor Teifi, Trebedw, Bryndioddef-isaf, Glyncaled, Berthyfedwen, Pont Ceri and Llanfair Orllwyn.[1] In 2011, the population of the community was 1835 with 54.7% able to speak Welsh.[2]
Gerard H. L. Fitzwilliams M.D., Ch.B., F.R.C.S., (1882–1968), was a British physician who worked in Hong Kong and a spy in Russia at the end of WWI; he was born in the village.