| Trasierra/Tierras de Granadilla | |
| Native Name: | Transierra - Granaílla |
| Native Name Lang: | es |
| Settlement Type: | Comarca |
| Subdivision Type: | Country |
| Subdivision Name: |  Spain |
| Subdivision Type1: | Autonomous community |
| Subdivision Name1: | Extremadura |
| Subdivision Type2: | Province |
| Subdivision Name2: | Cáceres |
| Seat Type: | Capital |
| Parts Type: | Municipalities |
| Parts Style: | list |
| P1: | Abadía, Ahigal, Azabal, El Bronco, Casar de Palomero, Cerezo, La Granja, Guijo de Granadilla, Marchagaz, Mohedas de Granadilla, Palomero, Pedro-Muñoz, La Pesga, Rivera Oveja, Santa Cruz de Paniagua, Santibáñez el Bajo, Zarza de Granadilla |
| Area Total Km2: | 614.69 |
| Population Total: | 10298 |
| Population Density Km2: | auto |
| Blank Name Sec1: | Largest municipality |
| Blank Info Sec1: | Zarza de Granadilla |
| Timezone1: | CET |
| Utc Offset1: | +1 |
| Timezone1 Dst: | CEST |
| Utc Offset1 Dst: | +2 |
| Postal Code Type: | Postal code |
| Area Code Type: | Dialing code |
Trasierra/Tierras de Granadilla (ext|Transierra - Granaílla), traditionally known as Tierras de Granadilla, is a comarca at the northern end of province of Cáceres in Extremadura, one of Spain's seventeen Autonomous Communities.
Its origins as an administrative unit date back to the establishment of the House of Alba in the 15th century. Its historical capital was the town of Granadilla, now abandoned. Until 1833 the Tierras de Granadilla historical region the five towns of las Hurdes, the villages of La Alberca and Sotoserrano (now in Salamanca Province, Castile and León), as well as the western part of Aldeanueva del Camino, which is now part of the Valle de Ambroz comarca to the east. The southern limit of Tierras de Granadilla is marked by the ancient commercial path known as "Via de la Plata", which is known locally as "lindón".[1]
There are linguistic affinities between this comarca and neighboring Las Hurdes and Sierra de Gata comarcas.[2]
The Mancomunidad Integral de Trasierra-Tierras de Granadilla was formed in 1997.[3] The Mancomunidad includes villages that were not part of the historical region, like Oliva de Plasencia, Jarilla and Cabezabellosa. Casar de Palomero town was merged with the Mancomunidad de las Hurdes.
The traditional names of the towns and aldeas are in brackets.