Montaña Alavesa (Basque: Arabako Mendialdea), full Cuadrilla de Campezo-Montaña Alavesa, is a comarca of the province of Álava, Spain. It is located to the southeast of Álava and covers an area of 534.87 km² with a population of 3179 people (2010). The capital lies in Santa Cruz de Campezo.

It includes the municipalities of Arraya-Maestu, Bernedo, Campezo, Lagrán, Peñacerrada and Valle de Arana as well as the lands of the Parzonería de Encía and the communities of Laño, Pipaón and Peñacerrada. It brings together a total of 47 locations.

Montaña Alavesa is a mountainous region and sparsely populated. It has lost over half its population throughout the twentieth century, from the more than 8,000 people in 1900 to the current population. 35.7% of the working population is employed in agriculture. 32% is devoted to industrial activity. Thanks to rising tourism the services industry is presenting an important area of development.

The municipalities and towns (municipality capitals in bold) that make up Montaña Alavesa are:

#	Municipality	Councils	Mayor	Political Party	Population (2010)	% Population	Territory km²
1	Arraia-Maeztu	Apellániz Atauri Azazeta Korres Maeztu Onraita/Erroeta Real Valle de Laminoria Róitegui Sabando Virgala Mayor	Ángel Marcos Pérez de Arrilucea Pérez de Alday	PNV	708	22.3	123.11
2	Bernedo	Angostina Arlucea Bernedo Marquínez Navarrete Oquina Quintana San Román de Campezo Urarte Urturi Villafría	Juana Velasco Arroniz	PNV	575	18.1	130.44
3	Campezo/Kanpezu	Antoñana Bujanda Orbiso Oteo Santa Cruz de Campezo	Aitor Aguinaga Legorburu	PNV	1126	35.4	85.02
4	Lagrán	Lagrán Pipaón Villaverde	José María Martínez Fernández	PNV	178	5.6	45.62
5	Peñacerrada-Urizaharra	Baroja Faido Loza Montoria Payueta Peñacerrada	Luisa María Alonso Pinedo	Agrup. Mun. Independiente	296	9.3	57.06
6	Harana/Valle de Arana	Alda Contrasta San Vicente de Arana Ullíbarri-Arana	Pedro San Vicente Corres	PNV	296	9.3	39.12
7 (*)	Parzonería de Encía						4937
8 (*)	Comunidad de Laño, Pipaón y Peñacerrada						5.13
	Cuadrilla de Campezo-Montaña Alavesa				3179	100	534.87

(*) Not municipalities

• Montaña Alavesa on Google Maps
• Cuadrilla de Campezo-Montaña Alavesa

42°40′48″N 2°29′21″W / 42.68000°N 2.48917°W / 42.68000; -2.48917