Nanocomposites are formed by joining two or more materials, at least one of which must have a size in the nanometer range (1 nm -100 nm). In this study, cobalt ferrite-silver nanocomposite was prepared with a green synthesis approach. The aim was to combine the magnetic properties of cobalt-ferrite nanoparticles with both the antimicrobial and conductivity properties of silver nanoparticles. Thus, the prepared material can be used for biological, optical, electrical, and magnetic applications. Cobalt ferrite nanoparticles were prepared using the co-precipitation method. Silver nanostructures were incorporated into cobalt ferrite nanoparticles using waste grass extract. Scanning Electron Microscope (SEM), Infrared Spectrometer, UV-VIS Spectrometer, X-RAY Diffraction Spectrometer, Dynamic Light Scattering Technique were used for characterization studies.