Nepean ( nə-PEE-ən) 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 (2021 Census).
Although the neighbouring municipality of Kanata formed the entrepreneurial and high tech centre of the region, Nepean hosted noted industries such as Nortel Networks, JDS Uniphase and Gandalf Technologies. As with the rest of the National Capital Region, however, Nepean's economy was also heavily dependent on federal government employment. Most of Nepean's employed residents commute to downtown Ottawa or Kanata for work.Nepean's policies of operational and capital budgeting prudence contrasted with the budget philosophies of some other municipalities in the area.