Abstract Organoplatinum(II) compounds have received enormous attention over the past decades due to their square-planar geometry as well as intriguing photo-physical properties. Self-assembly has emerged as an excellent approach to create well-ordered supramolecular architectures with tunable properties, which underpin the role of solvent-directed approach for the design of functional materials. In this mini-review, the recent advances on supramolecular self-assembly of cyclometalated platinum(II) complexes have been discussed. During the self-assembly process, non-covalent Pt–Pt and π – π interactions play crucial roles in controlling the structures and functions of the resulting assemblies.