Walcker Orgelbau (also known as E. F. Walcker & Cie.) of Ludwigsburg, Baden-Württemberg, Germany, is a builder of pipe organs. It was founded in Cannstatt, a suburb of Stuttgart in 1780 by . His son Eberhard Friedrich Walcker moved the business to Ludwigsburg in 1820. Walcker first became famous for the organ it built in the Paulskirche, Frankfurt, in 1833, which had 74 stops. Other important commissions followed rapidly, and Walcker became a pioneer of the "symphonic organ" style in Germany.