This review is a collective survey of the most recent research on hydrogen production from lightweight inorganic hydrides mediated by 3d metal-containing heterogeneous catalysts, within the broader context of chemical hydrogen storage. The manuscript is divided in paragraphs with respect to the hydride type. Literature examples are limited to 3d metal nanoparticles (NPs; heterogeneously catalyzed thermal dehydrogenation or hydrolysis) deposited on either inorganic or organic supports. The catalysts efficiency (in terms of H-2 release temperature, equivalents of H-2 produced and relative reaction rates) is provided throughout the discussion. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.