| Country: | Wales |
| Coordinates: | 52.736°N -3.0982°W |
| Official Name: | Arddleen |
| Population: | 418 |
| Unitary Wales: | Powys |
| Constituency Welsh Assembly: | Montgomeryshire |
| Constituency Westminster: | Montgomeryshire |
| Os Grid Reference: | SJ2515 |
Arddleen (cy|Arddlîn) or Arddlin is a village in Powys, central Wales. It lies about 5 miles north of Welshpool, in the community of Llandrinio. It had a population of 418 as of the 2011 census, with 31% born in Wales.[1]
The village was formerly served by Arddleen railway station on the Cambrian Railways network.