Jainism and Buddhism have played pivotal roles in shaping the social, cultural, and ethical landscape of ancient India, particularly through the promotion of vegetarianism. These two religions, emerging around the same era, profoundly influenced the ethos of non-violence (ahimsa) and compassion towards all living beings, which eventually extended to dietary practices. This article explores the historical roots, importance, and influence of Jainism and Buddhism on vegetarianism in ancient India, how their impact evolved over time, and examines lesser-known insights into their contributions. Historical Roots and Emergence Jainism: The Ancient Path of Non-Violence Jainism is one of the oldest religions in India, with its origins tracing back to pre-Vedic times. The teachings of Mahavira, who is traditionally regarded as the 24th Tirthankara (spiritual teacher), formalized many of the Jain principles. Mahavira’s emphasis on ahimsa—or non-violence—became the cornerstone of Jain philosoph...