Nanomaterials for hydrogen storage have attracted great interest in recent years. As shown in Table , "Nanoparticles" is the most popular concept followed by "Nanocomposites" and "Nanostructures". Metal hydride nanoparticles, polymer and metal-organic frameworks nanocomposites are advantageous for storing substantial amounts of hydrogen. Carbon "nanotubes" are efficient H2 storage materials. "Nanocrystals" and "Nanocatalysts" concepts reflect the synergistic effects of nanocrystallinity and nanocatalyst doping on improving the thermodynamics and hydrogen reaction kinetics in metal hydrides. The development of new "nanocatalysts" maximizes hydrogenation/dehydrogenation efficiency while minimizing the use of precious noble metals. 136 "Nanoporous materials" confirms that nanoconfinement of hydrides and borohydrides in carbon nanopores significantly improves their hydrogen sorption properties. The nano-concepts extracted from 2011-2021 publications confirm the widespread use of nanostructured materials in hydrogen storage.