The Humanitarian Assistance and Disaster Relief (HADR) turned to be a major working line for ASEAN civilian and military institutions, as testified by the increasing number of HADR exercises in the region. Using a geographical lens, this article analyses what the exercises can tell about ASEAN. HADR exercises indisputably reflect the disasters complexity and simultaneity to which the member-States as well as the region are confronted with. However, they are characterized by a plurality of the organizing institutions, an unequal distribution and a variability of their shape. Although these trends put under question their federating value, the article concludes that at this stage, HADR efforts, notably the dedicated exercises, are contributing to the ASEAN dynamics.