Villanueva de la Jara, popularly called La Jara, is a town and municipality in the Manchuela Conquense comarca, this in turn is part of the La Manchuela comarca, province of Cuenca, in Castile-La Mancha, Spain. It is known for the cultivation of portobellos and other edible fungi which is the main economic activity of the locality.

Manchuela or La Manchuela is a comarca located in Castile-La Mancha and Valencian Community, Spain.