Rosslyn is a split platformed Washington Metro station in the Rosslyn neighborhood of Arlington, Virginia, United States. The station was opened on July 1, 1977, and is operated by the Washington Metropolitan Area Transit Authority (WMATA). It is the station where the Blue and Orange Lines converge going east into Washington, D.C.; in the opposite direction, they split, the Blue Line heading south and the Orange Line west, with a transfer allowed between them.

Rosslyn station is quite deep—the deepest on the Orange and Blue Lines. Its platform lies some 97 vertical feet below street level (though its ceiling is nearly 60 feet high). It features the third longest continuous escalator in the world, at 437 feet (133 m); an escalator ride between the street level and the mezzanine level takes 159 seconds.