Sustainability has emerged as a critical global priority in response to escalating environmental degradation, climate change, and socio-economic inequalities. While modern scientific approaches offer technological solutions, they often overlook holistic and value-based frameworks essential for long-term ecological balance. Indian Knowledge Systems (IKS), rooted in ancient texts, traditions, and practices, present a comprehensive worldview that integrates environmental stewardship, social harmony, and ethical responsibility. Concepts such as Ṛta (cosmic order), Dharma (duty), Vasudhaiva Kutumbakam (the world as one family), and sustainable living practices embedded in agriculture, water management, architecture, and healthcare reflect an intrinsic alignment with sustainability principles. This paper reimagines sustainability through the lens of Indian Knowledge Systems, examining how ancient wisdom can be meaningfully integrated with contemporary scientific and policy-driven frameworks. By bridging traditional ecological knowledge with future-oriented innovations, the study highlights the relevance of IKS in addressing present and emerging sustainability challenges, fostering resilient communities, and promoting a balanced relationship between humans and nature