This paper explores the profound implications of Adi Shankara's Advaita Vedanta, particularly in its interpretation of the Bhagavad Gita, for fostering ethical practices within society. Shankara's non-dualistic philosophy, emphasizing the ultimate oneness of the individual soul (Atman) with the Absolute Reality (Brahman), provides a unique metaphysical foundation for universal ethics. By delving into key concepts from the Bhagavad Gita such as Karma Yoga, Jnana Yoga, Bhakti Yoga, and the nature of Dharma, as expounded through Shankara's commentary, this article demonstrates how his teachings transcend mere ritualism and offer a robust framework for moral conduct, social harmony, and selfless action. The paper argues that an understanding of Advaita, as elucidated by Shankara through the Gita, cultivates virtues like compassion, detachment, self-control, and a sense of interconnectedness, which are crucial for addressing contemporary ethical challenges and promoting a more just and harmonious society.