M. R. N. Murthy (Mattur Ramabhadrashastry Narasimha Murthy), was a professor of molecular biophysics at the Indian Institute of Science, IISc, Bangalore. He currently teaches at the . His chief contributions are in the area of X-ray crystallography. He was awarded the Shanti Swarup Bhatnagar award for outstanding contribution to physical sciences, which is the highest honour for a scientist in India, in the year 1992.