This session highlights recent advances in polymeric composites, encompassing both purely organic blends and systems reinforced with inorganic additives. Progress has been made from tailored matrix and interface design to scalable processing strategies, enabling simultaneous optimization of mechanical robustness, electrical functionality, and thermal management. This session will emphasize advances in interfacial engineering and structural control that enable a deeper understanding of structure–property relationships and the development of multifunctional composites. Particular attention will also be given to scalable processing routes that support industrial adoption. These approaches support cost-effective production under energy-efficient or ambient conditions. Overall, these advances demonstrate how innovations in polymeric composite design and processing are facilitating the transition from laboratory concepts to industrial implementation.