The Indian Knowledge System (IKS) is a diverse collection of intellectual traditions that have evolved over thousands of years, rooted in the wisdom of the Vedas, Upanishads, and later texts in philosophy, science, and medicine. Unlike modern compartmentalized knowledge, IKS promotes an integrated approach, linking the material and spiritual realms, and emphasizes the interconnectedness of various fields like philosophy, science, ethics, and governance. At its core, IKS views knowledge (vidya) as a tool for practical application, aiming at self-realization, social harmony, and sustainable living. It advocates for a holistic approach to learning that fosters individual and collective well-being. Ancient Indian practices like Vedanta, Ayurveda, Yoga, and Sanskrit grammar have shaped India's cultural and spiritual landscape and continue to offer insights for addressing contemporary global challenges. This paper explores how IKS is applied to modern issues such as ethical governance, sustainability, mental health, and personal development, showing its relevance in today's world. It also highlights how IKS offers valuable solutions through its integrated, responsible, and holistic approach to knowledge.