Dagda, storm of the Irish pantheon? A stumbling block of the interceltic comparatism. The author intends to revise a fact admitted for more than seventy years by comparative researchers: that the god Dagda would be in the Celtic religion of Ireland the counterpart of the Gauls’ Taranis. On the one hand, the Gallo-Roman archaeological elements demonstrate the categorical distinction between Sucellus, the Gallic counterpart of Dagda, and the storm-god likened to the Jupiter of the Romans. On the other hand, the portrait of Dagda coming out of the Irish medieval literature characterizes him in reality only and perfectly as a sovereign god of the Mithra type, according to the canons of the Indo-European theology. Raydon Valéry. Le Dagda, dieu de l'orage du panthéon irlandais ? Un écueil du comparatisme interceltique. In: Dialogues d'histoire ancienne, vol. 39, n°1, 2013. pp. 75-105.