The Infectious Diseases Society of India (IDSI), registered under the section 10 of the Tamil Nadu Societies Registration Act, 1975, is a non-profit membership-based organization of experts and researchers in infectious diseases and public health. The society focuses on knowledge dissemination and capacity building through collaborations with national and international institutions to resolve public health challenges and pandemics.

Founded in 2020 as a small, passionate research group, the IDSI has snowballed into a robust network of researchers, academicians, and public health professionals. IDSI now encompasses a versatile concoction of globally acclaimed scientists and academicians. The society encourages participation by offering membership to all aspirants engaged in infectious diseases research.

IDSI headquarters is located in Chennai, India.