Nepean is a former municipality and now geographic area of Ottawa, Ontario, Canada. Located west of Ottawa's inner core, it was an independent city until amalgamated with the Regional Municipality of Ottawa–Carleton in 2001 to become the new city of Ottawa. However, the name Nepean continues in common usage in reference to the area. The population of Nepean is about 186,593 people.

Kanata is a suburb and former city within Ottawa, Ontario, Canada. It is located about 22 km (14 mi) west of the city's downtown core. As of 2021, the former City of Kanata had a population of 98,938, with the population centre having a population of 137,118. Before it was amalgamated into Ottawa in 2001, it was one of the fastest-growing cities in Canada and the fastest-growing community in Eastern Ontario. Located just to the west of the National Capital Commission Greenbelt, it is one of the largest of several communities that surround central Ottawa.