Bonilla is an unexcavated archaeological site in the Salado Valley near Sigüenza (Guadalajara, Spain), remains only recognized at the surface.

Discovered through scattered pottery sherds dating from the 9th to 12th centuries, the site is linked to a salt production center and agricultural terraces. Bonilla serves as a typical example of rural occupation in the Upper Henares valleys during the Andalusi period.

Despite its untouched state, the surface findings offer insights into the rural life, economic activities, and cultural practices of the Andalusi inhabitants in this region.