Journal of Data Processing Ghouse Modin N. Mamdapur, Vinayak Arali, Ali K. S 15 1 2025 https://doi.org/10.6025/jdp/2025/15/1/13-26 https://www.dline.info/jdp/fulltext/v15n1/jdpv15n1_3.pdf The sustainable library of the future lies at the crossroads of environmental consciousness and digital transformation. This research paper portrays a reimagined library in a rapidly changing world through the three defining dimensions: ecological responsibility, community engagement, and inclusive knowledge access. It starts with a vision being shared for a sustainable library, one that is far beyond the traditional conception of repositories but that more actively interfaces with the challenges in the concerns of sustainability, green partnerships and collaboration with resilience, environmental challenges, ethical information stewardship, and the ongoing march of technological evolution. A sustainable library should be an active player in global challenges in environmental preservation, information ethics, and technological evolution. It feels like a challenging way to navigate through digital collection curation, community engagement towards sustainability, green partnerships, and collaboration with resilience in environmental challenges toward integrating high-technology solutions. The same will be the importance of libraries in the future toward responsible data management, data preservation, and adherence to ethical handling practices. A sustainable library is not a concept but an organic entity that will change with the conditions it works within and become a lighthouse of knowledge, inclusiveness, and sustainability within a community. Theresulting work is a source of new insights and perspectives that contribute to the burgeoning discourse on sustainable libraries, enabling the foundation for transforming libraries into vibrant, environmentally conscious, and community-centred institutions well poised to meet the demands of the digital age.