This minisymposium brings together researchers and practitioners applying computational mechanics to tackle critical challenges in sustainable development. From climate change mitigation to renewable energy systems, from atmospheric protection to inclusive infrastructure design, computational mechanics has a pivotal role to play in enabling a just and sustainable future. We invite contributions showcasing how computational techniques are being applied to real-world sustainability problems, such as noise mitigation in offshore wind farms, gas leak prevention in pipelines, or geomechanical modeling for infrastructure resilience. A central goal of this symposium is to bridge sectors, bringing together academia, industry, and government, and to foster interdisciplinary dialogue among engineers, environmental scientists, data scientists, and policy experts. We particularly encourage submissions that: • Address concrete sustainability problems through computational modeling • Integrate environmental, social, or ethical dimensions into engineering workflows • Present collaborative case studies involving academic, industrial, or governmental stakeholders • Explore novel methodologies in optimization, multiscale analysis, and physics-based modeling Recognizing that sustainable development requires transdisciplinary and cross-sector solutions, this minisymposium will serve as a platform not only to share technical advances but also to promote new collaborations between diverse communities committed to global impact.