Metal organic frameworks (MOFs) are crystalline solids wherein metal ions and organic ligands are assembled infinitely resulting in multi-dimensional networks. Ability of a metal center to exist in multiple oxidation states exhibiting different coordination geometries and the multidentate nature of organic ligands which dictates the directionality of the metal-ligand coordinate or covalent bonds provides structural diversity in terms of flexibility, functionality and porosity. In particular large overall pore volumes and surface areas, adjustable pore sizes, and tunable framework–adsorbate interactions in MOFs makes these attractive candidates for hydrogen storage. The talk will briefly discuss the structural features of potential MOFs and present chemistry issues for rational synthesis as well as reversible adsorption of hydrogen into its pores.