Oulunsalo (former , now considered outdated by the Institute for the Languages of Finland) is a former municipality in the region of North Ostrobothnia, in Finland. It was founded in 1882 and merged into the city of Oulu on 1 January 2013, along with Haukipudas, Kiiminki and Yli-Ii. The municipality had a population of (31 December 2012) and covered an area of , of which is water. Its population density was .
Oulu Airport is located in Oulunsalo.
Oulunsalo was one of the fastest-growing areas in Finland, among the other municipalities around Oulu.
The locality is unilingually Finnish.
Results of the 2011 Finnish parliamentary election in Oulunsalo: