Arroyo de las Fraguas is a municipality in Spain, located in the province of Guadalajara within the autonomous community of Castile-La Mancha.
It is a very small settlement: according to the 2004 census carried out by Spain's National Statistics Institute (INE), the municipality had a population of 42 inhabitants. That figure reflects the pattern of sparse population typical of many rural municipalities in the Guadalajara province.
Beyond its administrative status as a municipality and its recorded population, the available reference material provides no further details about the village's history, geography, or landmarks.