Diabetes mellitus is a chronic metabolic disorder characterized by impaired glucose regulation, which leads to various complications affecting multiple organs and systems. This chapter discusses various types of nanomaterials, such as liposomes, polymeric nanoparticles, dendrimers, and carbon-based nanomaterials, and their potential for encapsulating and delivering therapeutic agents to specific sites affected by diabetic complications. The advantages of nanomaterial-based drug delivery, including enhanced drug stability, prolonged circulation time, and improved targeting efficiency, are highlighted. The challenges and considerations associated with targeted nanotherapy development, including biocompatibility, toxicity, and regulatory aspects, are also discussed. The chapter serves as a valuable resource for researchers, clinicians, and healthcare professionals involved in the development and translation of targeted nano therapies, ultimately contributing to the advancement of diabetic complication management.