Metallosupramolecular grid complexes (hereafter referred to as metallogrids) are well-defined oligonuclear metal ion complexes involving essentially planar arrays of the metal ions sited at the points of intersection of square or rectangular metallogrids and possess a variety of interesting optical, electronic, magnetic and supramolecular properties. Herein I aim to give the reader an overview of the synthesis, properties and potential for a variety of high-tech applications of metallogrids.