Nanometer-sized particles of metal–coordination supramolecules are attractive to explore, as their unique properties are controlled by the large number of surface molecules, which experience an entirely different environment than those in a bulk crystal. In this review we try to offer an extensive report on nano metal– organic coordination polymers (MOCPs) synthesized up until now. Here, nano-MOCPs are categorized based on their respective morphologies. Furthermore we endeavor to offer some perspective on the applications of different nano-MOCP synthesis methods and their influence on morphology and particle size.