Matillas 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 Castile.
The municipality is small in population. According to the 2004 census conducted by the Instituto Nacional de Estadística (INE), Matillas had 171 inhabitants. This figure reflects the modest size typical of many rural municipalities in the province of Guadalajara.
As a municipality, Matillas constitutes a basic unit of local administration in Spain, encompassing the settlement and its surrounding area within the Guadalajara province.