Cabril Dam (Portuguese: Barragem do Cabril) is a concrete double curvature arch dam on the Zêzere River, where the river forms the border line between the districts of Castelo Branco and Leiria.

It is located in the municipality Sertã, in Castelo Branco District, Portugal.

The dam features on both banks one shaft spillway (combined maximum discharge 2,200 m³/s) and one bottom outlet (maximum discharge 200 m³/s).

[1] The Dam's arch is crossed by Estrada Nacional 2, Portugal's longest road[2] At full reservoir level of 294 m (maximum flood level of 296.3 m) the reservoir of the dam has a surface area of 20.23 km2 and a total capacity of 720 mio.

The power station contains 2 Francis turbine-generators with 47 MW (61 MVA) each in a surface powerhouse at the toe of the dam.