The molten-salt synthesis (MSS) method is one of the simplest, most versatile, and cost-effective approaches available for obtaining crystalline, chemically purified, single phase powders at lower temperatures and often in overall shorter reaction times with little residual impurities as compared with conventional solid-state reactions. While bulk materials have long been prepared using the MSS method, the preparation of uniform nanostructures using this technique has only arisen relatively recently, that is, within the current century. Over the years, our laboratory has applied this generalized methodology to the fabrication of complex transition-metal oxide nanostructures. In this presentation, various examples will be demonstrated, including barium titanate BaTiO3, strontium titanate SrTiO3, calcium doped strontium titanate CaxSr1-xTiO3, barium zirconate BaZrO3, and double perovskite oxides La2BMnO6 (B = Ni and Co), along relevant growth mechanism studies and the property measurements of these synthesized nanoparticles. Therefore, it is expected that this MSS method will be widely disseminated and broadly adopted as a facile, reliable, scalable and cost-effective approach in synthetic nanochemistry.