Cillán is a municipality in Spain, located in the province of Ávila within the autonomous community of Castile and León.
It is one of the many small municipalities that make up the province of Ávila, a largely rural area of the Castile and León region in the country's interior. The municipality is administered as a local entity under Spain's system of municipal government.
Beyond its status as a municipality in the province of Ávila, details such as its population, area, and landmarks are not covered by the available source material.