Exposure to UV rays had increased significantly due to the increase of greenhouse gases and depletion of the ozone layer. Increased use of electronic gadget screens is also contributing towards UV exposure of humans. The ultimate source of energy on earth is the Sun. Sun emits light of a very wide range of spectrum from ultra-violet to infrared and some mm-wave radiation. Sunlight reaching the earth’s surface can be classified based on wavelength. This spectrum ranges from 100 nm to about 1,000,000 nm (1 mm); UVC (100 to –280 nm), UVB (280–315nano meter), UVA (315–400 nano meter), visible (380–700nano meter), and infrared. Among these spectra, some spectrum of ultra-violet UVB & UVA is so useful as it is necessary for the synthesis of Vitamin D3 and mutagen. These UV radiations have the potential to change genetic information within the living cell causing cancer-type diseases. UV is responsible for causing cancer, and it is also responsible for enhancing skin aging and sunburn in humans. There are numerous types of UV absorbing material. Perovskite is a novel species of material in the field of UV absorbing materials. Perovskites are studied extensively because of their versatile property such as tunable bandgap, large carrier diffusion-length, ambipolar carrier-transport ability, cost-effective, carrier mobility, etc. Zinc Stannate (ZnSnO3) is a promising material for UV absorbance with a tunable bandgap. Zinc Stannate nanoparticles were synthesized by the simple aqueous method. XRD confirms that the synthesized nanoparticle is Zinc Stannate (JCPDS card no. 11-0274). PMMA has good optical property and is compatible with human skin which makes it suitable for application in UV shielding. The key objective of this research is to study the UV absorbing ability of Zinc Stannate nanoparticles and Zinc Stannate/PMMA composite. We found that the synthesized nanoparticle is absorbing around 90% of UV in the UVA and UVB region and also giving 40% transparency in visible region, hence the material may be use in various UV shielding applications.