Surindar Kumar Trehan was an Indian mathematician who specialised in non-linear stability in magnetohydrodynamics.Prof.
Trehan has done significant work on stability of force-free magnetic fields, stability of jets and cylinders and stability of inhomogeneous plasmas. His work on the mathematical treatment of gaseous polytropes in the presence of a magnetic field is a breakthrough in this area. He has also done important work on hydromagnetic waves and rotating gaseous masses. He was awarded in 1976 the Shanti Swarup Bhatnagar Prize for Science and Technology, the highest science award in India, in the mathematical sciences category
Surindar Kumar Trehan obtained PhD (1958) from University of Chicago, USA. He was Dean, Science Faculty, and CSIR Professor Emeritus, Department of Mathematics, both at Panjab University, Chandigarh (1980-82, 1989).