Muduex is a municipality in the province of Guadalajara, within the autonomous community of Castile-La Mancha, Spain. It is located in the central part of the country, in the region historically known as the Alcarria.
According to the 2004 census carried out by the Instituto Nacional de Estadística (INE), Muduex had a population of 120 inhabitants. The municipality is one of many small rural settlements that make up the sparsely populated countryside of the Guadalajara province.