Metal Sulfide nanoparticles have attracted considerable interest because of their unique semiconducting and electronic properties. ZnS thin films have been deposited on glass substrates by spin coating method with Zinc Nitrate as starting material. The samples were synthesized by mixing Zinc Nitrate and Thiourea in Isoproponal. The crystal structure, orientation and surface morphology were investigated by X-Ray diffractometer (XRD) and Scanning Electron Microscopy (SEM). XRD pattern reveals the hexagonal structure of ZnS thin films. Optical properties were studied using UV-visible spectroscopy. The film shows good optical properties with high absorption and energy band gap value. These prepared films can be used for solar cell applications.