Asen Borisov Datsev (born 4.02.1911) is a Bulgarian theoretical physicist and a member of the Bulgarian Academy of Sciences (1961). He was born in the village of Kamenar. He graduated from Sofia University (1933). He continued his studies in Paris (1934—38). Since 1947 he has worked at Sofia University (professor from 1950) and since 1962 also at the Physical Institute of the Bulgarian Academy of Sciences.
His research was in the field of quantum mechanics and heat conduction. He proposed a method of solving the equations of the propagation of heat in inhomogeneous solids for arbitrary initial and boundary conditions.
Dimitrov Prize (1951).