Vallanca is a municipality in the comarca of Rincón de Ademuz, within the Valencian Community of Spain. It is one of several small towns that make up this comarca, an enclave of the Valencia region located in the country's interior.
The Rincón de Ademuz is geographically separated from the rest of the Valencian Community, lying between the provinces of Cuenca and Teruel. Vallanca shares this distinctive setting with the other municipalities of the comarca.
As a municipality, Vallanca forms part of the local administrative structure of the Valencian Community, with its own municipal government. It is a small, rural settlement typical of the sparsely populated interior of the region.