Sin (Swedish: Synd, German: Rausch) is a 1928 silent drama film directed by Gustaf Molander and starring Lars Hanson, Elissa Landi and Gina Manès. It was a co-production between Germany, Sweden and the United Kingdom. It premiered in Sweden in September 1928 but was not released in London until January 1929.

It was shot at the Råsunda Studios in Stockholm and on location in the city. The film's sets were designed by the art director Vilhelm Bryde, who also produced the film. It is based on an 1899 play by August Strindberg which had previously been made into a 1919 film Intoxication directed by Ernst Lubitsch.