Sustainable tourism in India is increasingly recognized as a critical approach to balance economic growth, environmental conservation, and socio-cultural development. This study provides a comprehensive review of sustainable tourism practices, government initiatives, and policies across all Indian states and Union Territories. It highlights region-specific strategies, including community-based eco-tourism, heritage and cultural preservation, marine and coastal conservation, high-altitude eco-tourism, and wildlife protection. The analysis emphasizes the importance of low-impact tourism, eco-friendly infrastructure, community participation, and regulatory frameworks in achieving sustainable outcomes. The study also identifies best practices, challenges, and opportunities between States and Union Territories of India and to enhance environmental stewardship, support local livelihoods, and ensure the long-term viability of tourism in India