|This article does not cite any references or sources. (December 2011)|
A comarca (Spanish: [koˈmarka], Portuguese: [kuˈmaɾkɐ] or [koˈmaʁkɐ], Galician: [koˈmaɾka] pl. comarcas; Catalan: [kuˈmarkə] or [koˈmaɾka], pl. comarques) is a traditional region or local administrative division found in parts of Spain, Portugal, Panama, Nicaragua, and Brazil. The term is derived from the term marca, meaning a "march, mark", plus the prefix co- meaning "together, jointly".
The term comarca is used in several regions of the Iberian Peninsula.
- In Cantabria, the comarca exists as a traditional or historical division, usually identified with the greatest rivers of the region.
- In Catalonia and Aragon, the comarca exists as a local government area, and has a representative comarcal council.
- In the Valencian Community, the comarca exists only as a traditional region with no administrative competences. They are legally referred as homologated territorial demarcations instead of as comarques.
- In Galicia the comarca or bisbarra are traditional divisions of the land and enjoy limited official recognition, but have no administrative relevance. However, the Galician government is attempting to transform the bisbarras into territorial administrative tiers, forming up a new regional network allegedly more balanced and efficient. Galician comarcas also have a comarcal council.
In other places, such as Extremadura, the comarca may be simply a loosely-defined region.
Because of the comarca's long-standing use, it is sometimes used as the basis for the promotion of tourism, with emphasis on local cultural tradition and history.
In Panama, the comarca indígena is an administrative region for an area with a substantial Indian population. Three comarcas (Comarca Emberá-Wounaan, Kuna Yala, Ngöbe-Buglé) exist as equivalent to a province, with two smaller comarcas (Kuna de Madugandí and Kuna de Wargandí) subordinate to a province and considered equivalent to a corregimiento (municipality).
Portugal and Brazil 
Nowadays, both in Portugal and Brazil, the comarca is a territorial division in the judicial system. It indicates the area covered by a lower level court. It may correspond to a municipality, or group together several small municipalities under one court.
Until the 16th century, the comarca was a large administrative region of Portugal. There were six tradicional comarcas, Entre-Douro-e-Minho, Trás-os-Montes, Beira, Estremadura, Alentejo and Algarve, of which the last had the honorary title of "kingdom". In the 16th century, the comarcas started to be known as "provinces". The name "comarca" was given to the administrative and judicial subdivisions of the provinces, introduced in the 17th century and replaced by the current administrative districts and judicial comarcas in the 19th century.
See also 
- Comarcas of Aragon
- Comarcas of Asturias
- Comarcas of Galicia
- Comarcas of Spain
- Comarques of Catalonia
- Comarques of the Valencian Community
- List of terms for country subdivisions
- Provinces of Panama
- Comarcas de Galicia, official site for the management and promotion of Galician comarcas, maintained by the Galician Government (Galician) (English) (Spanish)
- History of comarca divisions in the Catalan Countries (Catalan)