In this study preparation of Si and Zr doped CuO nanopowders have been investigated. The effects of Si and Zr doping and heat treatment temperature on the structural and optical properties of Nanopowders have been studied by X-ray diffraction (XRD), Scanning electron microscopy (SEM-EDX), UV-Vis absorption and FTIR spectroscopy. Nanopowders were obtained by sol gel method under room conditions (temperature, 25–32 