System Planning Corporation ( Arlington).Optimized Systems & Solutions ( Reston).Military Professional Resources ( Alexandria).Kellogg Brown and Root Services ( Arlington).(owner of DynCorp International) ( Falls Church) Computer Sciences Corporation ( Falls Church).Some of the following companies may only derive a minority of their income from government contracting, but are listed here for organizational purposes. Government contracting companies (including defense contracting companies) may be involved in various fields, such as financial services, healthcare, information technology, mercenaries, science, and space technology, sometimes all within the same company. Northrop Grumman is the primary contractor for the James Webb Space Telescope, the successor to the Hubble Space Telescope and Spitzer Space Telescope. Government contractors The General Dynamics F-16, originally designed in the 1970s, is still in use by air forces around the world. Strategic Investment Group ( Arlington).Arlington Asset Investment ( Arlington).Transmitter Location Systems ( Chantilly)Ĭonsumer goods M&M's, one of several lines of snacks made by Mars, Incorporatedįinance The Capital One Tower in Tysons is the tallest habitable building the Washington region.Companies with a McLean or Vienna address are often located in Tysons Corner 'Tysons Corner' was not available as a postal address until 2011. The majority of the following companies are located in Fairfax County and Loudoun County the most populous jurisdictions in Northern Virginia, Virginia state, and the Baltimore-Washington metropolitan area.

This is a list of notable companies headquartered in Northern Virginia. Tysons Corner has more Fortune 500 company headquarters than Washington, D.C.

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