Emil Constantinescu (Romanian pronunciation: [e'mil konstanti'nesku] (listen); born 19 November 1939) is a Romanian professor and politician, who served as the third President of Romania, from 1996 to 2000.
Constantinescu first graduated from the Faculty of Law and then the Faculty of Geology and Geophysics of the University of Bucharest, and subsequently started a career as a geologist.
He has doctorates: in Geology from the University of Bucharest and Sciences from Duke University, USA.
Beginning in 1966, Constantinescu taught in the Geology Department of the University of Bucharest.
After the Romanian Revolution of 1989, Constantinescu became a founding member and vice president of the Civic Alliance.
He was the acting chairman of the Democratic Romanian Anti-Totalitarian Forum, the first associative structure of the opposition in Romania, which was later transformed into a centre-right political and electoral alliance known as the Romanian Democratic Convention (CDR).