The Sin of Madelon Claudet is a 1931 film which tells the story of a wrongly-imprisoned woman who turns to theft and prostitution in order to support her son. It stars Helen Hayes, Lewis Stone, Neil Hamilton, Cliff Edwards, Jean Hersholt, Marie Prevost, Robert Young, Karen Morley and Charles Winninger.

The movie was adapted by Charles MacArthur and Ben Hecht from the play The Lullaby by Edward Knoblock. It was directed by Edgar Selwyn.

It won the Academy Award for Best Actress (Helen Hayes).