Kauhaneva–Pohjankangas National Park is a national park in the municipalities of Kauhajoki and Karvia in the Southern Ostrobothnia and Satakunta regions of Finland. Established in 1982, the park covers 57 square kilometres (22 sq mi). It consists of swamp areas, mainly bogs such as the 16.3-square-kilometre (6.3 sq mi) Kauhaneva bog, scattered around it.
The Kauhaneva–Pohjankangas area is part of the south-western region of the Suomenselkä watershed area. The soil is mostly turf and the bedrock is composed of porphyric granite. The northern parts of Kauhaneva are 170 to 177 metres (560 to 581 ft) above sea level. The southern and western parts are approximately 160 metres (520 ft) above sea level.