Letux is a municipality in the province of Zaragoza, in the Aragon region of northeastern Spain. It belongs to the Campo de Belchite comarca, a comarca centred on the town of Belchite in the Ebro valley area of Zaragoza province.
The municipality is small and rural. According to the 2010 census, it had a population of 425 inhabitants. Like many settlements in this part of Aragon, it is a compact village surrounded by open agricultural countryside.