Santosh Kumar Rai
- Designation: Professor H
- Section: Physics
- Email: skrai [at]hri.res.in
- Room: 203
- Phone Office: +91-532-227 4357
- Phone Residence: +91-532-227 4004
- Webpage: http://www.hri.res.in/~skrai/
An Aided Institute of the Department of Atomic Energy, Government of India