Lalueza is a municipality in the province of Huesca, in the autonomous community of Aragon, Spain. It is located in the comarca of Monegros, in the eastern part of the province, within the Ebro River basin.
According to the 2004 census (INE), the municipality had a population of 1,140 inhabitants. The town lies in a semi-arid landscape characteristic of the Monegros region, an area known for its dry terrain and steppe-like vegetation.
Lalueza is one of several small municipalities in the province of Huesca whose economies have traditionally been based on agriculture, particularly dryland farming adapted to the region's low rainfall.