The Vianesa is a traditional Spanish breed of cattle originating in the autonomous community of Galicia in north-western Spain.

It is named either for the municipality of Viana do Bolo in the province of Ourense in south-eastern Galicia, close to the border with northern Portugal, or for the comarca of Viana in which that municipality lies.

[8] The Vianesa is a traditional breed of the autonomous community of Galicia in north-western Spain.

[5]: 164 [6] With the Cachena, the Caldelana [es] or Caldelá, the Frieiresa [es] and the Limiana [es] or Limiá, it forms part of the grouping of dark brown cattle known as the Morena Galega or Morenas del Noroeste (roughly 'dark-browns of the north-west'), for which a conservation programme was launched by the Xunta de Galicia in 1990.

Some cattle have patches of different shades of brown; these are names for some of the patterns that these form.