Bionanohybrids play a vital role in the field of wastewater treatment, bio-electronics, and biomedicine. Highly unique properties and functions are acknowledged by the Bionanohybrids which is all due to the synthetic material and synthetic processes used to fabricate such hybrids. The integration of the biomolecules proteins, DNA, etc., with nanomaterials like organic, inorganic, and hybrid materials gives rise to and comprises some new types of a substance known as Bionanohybrids with a bundle of new unique properties and features which are not enhanced by their single ones. These materials involve organic, inorganic, and hybrid components employed regarding their functional applications and characteristics which cooperate with biomolecules. Furthermore, fabrication techniques are qualified and finalized depending on their functions and properties. This synthetic method includes bioconjugations, and self-assemblies, and is much more applicable in different fields regarding Bionanohybrids. This technique introduces the biomolecules to nanoparticles and fabricates the Bionanohybrids. Although the fabrication process is decided among the requirements of the functions and characteristics of a given application. Their quality efficacy is investigated by their characterization of morphology, biology, microscopy, zeta potential measurement, and spectroscopically. Which in results drives the technique and the missions of the Bionanohybrids regarding their functions. In overall, Bionanohybrids and synthetic materials have enormous potential in emerging fields which include materials science, electronics, and medicine. They develop a focus on extending research and development that have significant future potential due to their innovative nature, which opens doors to new opportunities.