Kannus is a town and municipality in Finland, situated in the province of Western Finland and part of the Central Ostrobothnia region. It is located in the country's west, with neighbouring municipalities including Kalajoki, Kokkola, Sievi and Toholampi.
The municipality covers an area of 470.65 square kilometres (181.72 sq mi), of which 2.41 square kilometres (0.93 sq mi) is water. Its population is 5,246, giving a population density of 11.21 inhabitants per square kilometre (29.0/sq mi).
Kannus is unilingually Finnish, meaning Finnish is the sole official language of the municipality.