A modular device for the support of casks includes a base structure on which the casks are supported in multiple rows and/or columns formed by at least two, substantially parallel bars, with specular form and geometry, with one end of each of the bars being fitted with a male joining element and the opposite end fitted with a complementary female joining element. Each bar includes at least one pair of upper facing support elements in the form of wedges with facing inclined surfaces, arranged with a mutual separation on the upper side of each of the bars so that they support a cask in a stable position, and at least one other pair of respective lower facing support elements, which are separated, but arranged on the lower side of the bar and in positions that are supported on a lower cask in use.