| Tetrafylia | |
| Name Local: | Τετραφυλία |
| Type: | municipal unit |
| Periph: | Epirus |
| Periphunit: | Arta |
| Population: | 2248 |
| Population As Of: | 2021 |
| Area: | 159.8 |
| Coordinates: | 39.2833°N 39°W |
| Postal Code: | 470 47 |
| Licence: | ΑΤ |
Tetrafylia (Greek, Modern (1453-);: Τετραφυλία) is a former municipality in the Arta regional unit, Epirus, Greece. Since the 2011 local government reform it is part of the municipality Georgios Karaiskakis, of which it is a municipal unit.[1] The municipal unit has an area of 159.823 km2.[2] Population 2,248 (2021). The seat of the municipality was in Astrochori.