The global polymer industry, producing over 400 million metric tons of plastics annually, faces mounting pressure to address environmental challenges such as pollution, fossil fuel dependence, and inefficient material cycles. This chapter synthesizes sustainability trends across polymer sectors-coatings and adhesives, elastomers, polyolefins, bioplastics, and fibers; highlighting technological advances including bio-based feedstocks, chemical recycling, digital design tools, and circular product strategies. Key drivers include regulatory frameworks, consumer demand, and corporate sustainability commitments, with innovations targeting recyclability, biodegradability, and reduced carbon footprints. Critical inflection points, such as cost parity between bio- and fossil-based polymers, global policy harmonization, and scaling of recycling infrastructure, will shape the sector’s trajectory. The roadmap emphasizes interdisciplinary collaboration, lifecycle-based design, circularity-focused business models, and supportive policy measures. By 2035, the vision is for a polymer ecosystem grounded in renewable resources, closed material loops, and traceable supply chains, achieved through coordinated action among researchers, industry, policymakers, and academia.