Koskenkorva Viina  —  or simply Koskenkorva  —  is a Finnish brand of clear spirit with the alcohol content of 38 % (Gay-Lussac scale). Its smooth and fresh taste (although not as smooth as the best Russian or Polish vodkas) makes it perfect to be served straight as an aperitif schnaps, or mixed in various drinks and cocktails.

Koskenkorva Viina is named after the Koskenkorva distillery, where the high-quality ethyl alcohol used in its making is being distilled from the finest Finnish barley grain. Koskenkorva Viina is produced and bottled at the Rajamäki production plant by the Altia Corporation, the leading Finnish wine and spirits house. The Rajamäki plant was established in 1888.

Since 1953, when it was first introduced, Koskenkorva Viina has been Altia's most popular strong alcoholic product in Finland. Altia's products for export include Finlandia Vodka and Koskenkorva Vodka.