Cacilhas is a former civil parish in the municipality of Almada, Lisbon metropolitan area, Portugal. In 2013, the parish merged into the new parish Almada, Cova da Piedade, Pragal e Cacilhas. The population in 2011 was 6,017, in an area of 1.09 km². Cacilhas is situated on the south bank of the river Tagus facing the city of Lisbon.