- A city of northern Texas, a suburb of Dallas–Fort Worth.
- A county and unincorporated city of northern Virginia across the Potomac River from Washington, DC. Mainly residential, it is the site of Arlington National Cemetery (established in 1864), where American war dead and other notables are buried.
- A place name.
- (US) Arlington National Cemetery (in Arlington County, Virginia) an American military cemetery, which includes among other things the tomb of the unknown soldiers.