Aguada de Baixo is a freguesia in Águeda Municipality, Aveiro District, Portugal. It has an area of 4.7 km2 and in 2011 had a population of 1373. In 2013 it was merged with Barrô as part of an administrative reorganization of the territory and formed the União das Freguesias de Barrô e Aguada de Baixo. It was restored in 2025.