Ano Kastritsi () 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.
Historical population
{| class="wikitable"
! Year !! Population
|-
| 1981 || 691
|-
| 1991 || 764
|-
| 2001 || 931
|-
| 2011 || 832
|-
| 2021 || 745
|}
See also
- List of settlements in Achaea