| Alestaina | |
| Name Local: | Αλέσταινα |
| Type: | community |
| Coordinates: | 37.8667°N 79°W |
| Elevation: | 900 |
| Periph: | West Greece |
| Periphunit: | Achaea |
| Municipality: | Kalavryta |
| Municunit: | Aroania |
| Population As Of: | 2021 |
| Population: | 10 |
| Postal Code: | 250 16 |
| Licence: | AX |
Alestaina (Greek, Modern (1453-);: Αλέσταινα) is a mountain village in the municipal unit of Aroania, Achaea, Greece. It is 2 km south of Agridi, 3 km west of Aroania (village), 2 km north of Paos and 21 km southwest of Kalavryta.
| Year | Population | |
|---|---|---|
| 1981 | 90 | |
| 1991 | 52 | |
| 2001 | 52 | |
| 2011 | 13 | |
| 2021 | 10 |