Nicolae Popa (born 1 September 1939) is a Romanian judge, the president of the High Court of Cassation and Justice from 2004 to 2009. Popa, born in Govora, Vâlcea County, graduated the University of Bucharest's Law Faculty in 1960, receiving a Doctorate in Law from that institution in 1975. Beginning in 1960, he taught in the same faculty, becoming a professor of general legal theory and judicial sociology in 1975. He was a member of the faculty's professorial council, as well as of the Law Faculty professorial council. He also served as a thesis adviser in law.