The Harish-Chandra Research Institute (HRI) is a premier institution dedicated to research in mathematics, and in theoretical physics. It is located in Allahabad, India, and is funded by the Department of Atomic Energy, Government of India.

The primary areas of focus in Mathematics are Algebra, Analysis, Geometry and Number Theory; and Astrophysics, Condensed Matter, Particle Physics, Quantum Information and String Theory in Physics. The institute runs a PhD programme in both Mathematics and Theoretical Physics for both post MSc and post BSc students. The institute also has a visiting students' programme for bachelors and masters students; and actively runs various outreach programmes.

In the past two decades HRI has had significant impact in both research and education in Mathematics and Theoretical Physics. Awards conferred on faculty members include one Dirac Medal, five Bhatnagar Awards and one Padma Bhushan. Around fifty alumni of the institute hold faculty positions in premier scientific institutions of the country.