Secret Code LB 17 (German: Geheimzeichen LB 17) is a 1938 German thriller film directed by Victor Tourjansky and starring Willy Birgel, Hilde Weissner and Bernhard Minetti. The film's sets were designed by the art directors Karl Böhm and Erich Czerwonski. It was made at the Babelsberg Studios outside Berlin.