Daulat Singh Kothari (born 6.07.1906) is an Indian physicist and astrophysicist and a member of the Indian Academy of Sciences, and was its president (1973 — 75). He was born in Udaipur (the state of Rajasthan). He graduated from the University of Allahabad, where he was a lecturer in 1928 — 34, and from 1934 he has worked at the university in Delhi (professor from 1942).
His work is in the fields of nuclear physics, quantum statistics, quantum mechanics, statistical thermodynamics, optics, astrophysics and theories of gravitation.
A foreign member of the USSR Academy of Sciences (1976).