| Ano Kastritsi | |
| Name Local: | Άνω Καστρίτσι |
| Type: | community |
| Coordinates: | 38.2667°N 71°W |
| Elevation: | 500 |
| Periph: | West Greece |
| Periphunit: | Achaea |
| Municipality: | Patras |
| Municunit: | Rio |
| Population As Of: | 2021 |
| Population: | 745 |
| Postal Code: | 265 00 |
| Area Code: | 2160 |
| Licence: | AX |
Ano Kastritsi (Greek, Modern (1453-);: Άνω Καστρίτσι) is a village in the municipal unit of Rio, Achaea, Greece. It is situated at about 500 m elevation in the forested northwestern foothills of the Panachaiko, 6 km southeast of Rio town centre, Kato Kastritsi is 4 km to the northwest. It is known for the views to the east part of Patras, the Corinthian Gulf, the Rio-Antirio Bridge, and for its taverns and food.
| Year | Population | |
|---|---|---|
| 1981 | 691 | |
| 1991 | 764 | |
| 2001 | 931 | |
| 2011 | 832 | |
| 2021 | 745 |