Glen Cairn is a neighbourhood in Kanata South Ward in the west end of Ottawa, Ontario, Canada. It is also the name of a public school in the area. Prior to amalgamation in 2001, it was located in the City of Kanata. It is located in South Kanata, about 22 km (14 mi) west of Downtown Ottawa. It was one of the original neighbourhoods in Kanata. The community was built in the 1960s, and was part of Goulbourn Township until the creation of Kanata in 1978. As of the Canada 2016 Census, there were 11,836 people living in Glen Cairn.