The article discusses the potential of harnessing South Asia's hydrocarbon basins for underground hydrogen storage (UHS) to address the region's energy demands and transition towards a low-carbon future. Despite challenges in current hydrogen storage methods, geological storage in porous reservoirs emerges as a scalable and economically viable alternative. The study highlights the significant storage capacity across India, Bangladesh, Pakistan, and Sri Lanka, with India leading by 75%. By considering hydrogen-methane blends, energy storage potential can be further enhanced. Cost evaluations reveal varying levelized costs across the region, but South Asia remains globally competitive. Proximity to renewable energy sources in the region, such as solar and wind capacities, offers strategic advantages for hydrogen production and storage, aligning with key basins and minimizing transportation costs. While risks like reservoir heterogeneity and gas leakage must be managed, South Asia's hydrogen storage potential presents an opportunity for energy independence and global leadership in the transition to a low-carbon future. To realize this potential, investments in infrastructure, regulations, and technology, coupled with global partnerships, are crucial for accelerating the adoption of hydrogen as a primary energy source.