Dibyendu Nandi is an Indian space scientist known for his research related to the solar cycle, solar dynamo activity and their influence on space weather. Nandi is the head of the Center of Excellence in Space Sciences, India or CESSI at IISER Kolkata. He is associated with Montana State University, the Center for Astrophysics | Harvard & Smithsonian and IISER Kolkata where he carried out most of his research work.