ABSTRACT:Abstract(#br)Nanofluids are the novel fluids which obtained by dispersing the nano-sized particles into traditional fluids. Nanofluids are reported that they have vast potential in wide range of industrial applications. In particular, nanofluids are the best coolant for replacing the conventional heat transfer fluids. Determination of thermal conductivity and viscosity experimentally are time consuming, laborious and expensive which are the limitations of using nanofluids in real time applications. This review paper summarizes the latest research works on determination of thermo physical properties of different nanofluids by using soft computing or intelligent techniques and leads to the opportunities for future research and to reduce the effort of developing the experimental test runs and number of hypothesis.