 His mother Cecilia Tănăsescu (born Dragomir (1902–1986) was teacher of history in Bârlad and Buzău.Florin-Teodor Tănăsescu studied engineering at the Faculty of Electrotehnics of the Politechnic Institute of Bucharest graduating in 1956.He defended the thesis in the field of electrical measures for his doctorate in 1968, at the Gheorghe Asachi Technical University of Iaşi alumni .