L'Affaire Lafarge

L'Affaire Lafarge may refer to:


 * The 1840 trial and conviction of Marie Lafarge for murdering her husband by arsenic poisoning
 * The Lafarge Case (L'Affaire Lafarge), a 1938 French film based on the 1840 case
 * Allegations against French cement company Lafarge involving complicity in crimes against humanity