Väisänen is a Finnish surname. Notable people with the surname include:
A. O. Väisänen (1890–1969), Finnish scholar of folk music, an ethnographer and ethno-musicologistMatti Väisänen (ski-orienteer) (born 1948), Finnish ski-orienteering competitorMatti Väisänen (bishop) (born 1934), Finnish former priest and bishopMervi Väisänen (born 1973), Finnish ski-orienteering and mountain bike orienteering competitorSauli Väisänen (born 1994), Finnish footballerVille Väisänen (born 1977), Finnish footballer