Enhancement of boiling heat transfer, as one of the most efficient kind of heat transfer processes that occurs in variety engineering applications , has been the subject of several investigations over the past few years. Boiling heat transfer is affected by the wall heat flux, heating surface geometry and properties, thermo physical characteristics of fluid and presence of additives such as solid particles, surfactants and emulsifiers. The aim of This investigation is to study about the boiling heat transfer characteristics of ?-Al 2 O 3 /water Newtonian nanofluid as well as ?-Al 2 O 3 /CMC Non-Newtonian nano fluid. Nano fluids are liquid suspensions containing nano particles with thermal conductivities higher than the base liquids and with sizes smaller than 100 nm. In this research different concentrations of ?-Al 2 O 3 particles in water nano fluids, CMC solutions and Non Newtonian nano fluid of Al 2 O 3 particles in CMC solution were studied under nucleate pool boiling heat transfer conditions. Experiments were carried out at atmospheric pressure. Results show that nano fluids can noticeably increase boiling heat transfer coefficients. Amount of increasing is related to particle concentration. The boiling experiments of CMC solution exhibit deterioration in the boiling heat transfer performance with increasing CMC concentration because of increasing in solution viscosity. However adding nano particles to CMC Non Newtonian solution result enhancement in boiling performance.