Santa Luzia Dam () is a concrete arch dam on the Unhais, a northern tributary of the Zêzere River, located in the municipality Pampilhosa da Serra, in Coimbra District, Portugal. The dam was constructed between 1930 and 1942 and was designed by André Coyne.
Santa Luzia Dam is a 76 m tall and 115 m long arch dam. The volume of the dam is 80.000 mó. The dam contains 2 crest spillways and one bottom outlet. At full reservoir level the reservoir of the dam () has a surface area of 2.46 kmò and its total capacity is 53.7 Mio mó.
The concrete of the dam is affected by concrete swelling, caused by an alkaliâÂÂsilica reaction, that leads to tensions and cracks in the concrete.
The power plant is one of the smaller hydroelectric power stations in Portugal with a nameplate capacity of 32 MW. Its average annual generation is 55 Mio. kWh. The power station contains four Pelton turbine-generators.