India is a mega diversity region having varied ecosystems from western Ghats to Himalayas, from Sundarbans to Thar desert. The Human-wildlife conflict and ecosystem degradation have heightened the need for comprehensive and actionable conservation strategies. However, presently its diversity is being threatened due to various reasons including poaching, habitat loss, climate change, habitat fragmentation, illegal wildlife trade amongst others. As India alone cannot fight this issue largely due to its transboundary nature, global alliances and harmonised legal frameworks with neighbouring countries are essential. Moreover, wildlife conservation has transitioned from being primarily a local or national issue to a global priority, addressing biodiversity challenges through international collaboration. This chapter examines various harmonized transboundary laws and treaties designed to safeguard wildlife in India. India actively participates in numerous international and multinational conservation efforts to protect biodiversity. Case studies like, the Cheetah Reintroduction Program in India, The Great Limpopo Transfrontier Park, The Green Belt, and the W-Arly-Pendjari (WAP) Complex, illustrate the success of coordinated legal frameworks in transboundary conservation. By coordinating legal standards, promoting collaboration and strengthening enforcement mechanisms these examples focus attention on the critical role of legal harmonization in achieving effective transboundary conservation outcomes.