AbstractThis article presents Durkheim as a Neo-Kantian social thinker and a source of the theory of emotional contagion. The Elementary Forms of Religious Life is examined as Durkheim’s paradigm case of Neo-Kantianism. He is first considered among the intellectual context of French Neo-Kantianism and its figures Charles Renouvier, Émile Boutroux, and Octave Hamelin, all whom were influential in his formative years. Durkheim’s Neo-Kantianism in The Elementary Forms of Religious Life is then juxtaposed to the Neo-Kantian legal philosophy of Emil Lask and Hans Kelsen. Agued is that Durkheim’s notions of distortion and emotional contagion are his leading contributions to Neo-Kantianism.