The Fairfax County Parkway, numbered State Route 286, is a primary state highway in the U.S. state of Virginia, acting as an arterial route in Fairfax County with a mix of interchanges and signalized and unsignalized intersections. Its alignment runs from southeast to northwest and roughly corresponds to part of the once-proposed Outer Beltway around Washington, D.C. The first segment of the roadway opened in 1987; the road was completed in 2010.

Fairfax County, officially the County of Fairfax, is a county in the Commonwealth of Virginia. With a population of 1,150,309 as of the 2020 census, it the most populous county in Virginia, the most populous jurisdiction in the Washington metropolitan area, and the most populous location in the Washington–Baltimore combined statistical area. The county seat is Fairfax; however, because it is an independent city under Virginia law, the city of Fairfax is not part of the county.