Athanasios Konstantinou (Greek: Αθανάσιος Κωνσταντίνου, born 18 July 1959 at Athens) is a Greek politician, physician, and retired general officer currently serving as a Member of the European Parliament. He was originally elected as a member of Golden Dawn, but is now an independent politician.^{[1][citation needed]}

Konstantinou is a graduate of the Corps Officers Military Academy (Greek: Στρατιωτική Σχολή Αξιωματικών Σωμάτων), which educates Hellenic Army officers in the Legal, Medical, Finance, Aviation and Auditing Corps (see Hellenic Military Academy: Overview); and the Medical School of the Aristotle University of Thessaloniki.^{[citation needed]}

As a physician, Konstantinou specialised in the pathology the central nervous and reproductive, systems, molecular pathology, and toxicology in Germany and Austria. Konstantinou speaks English and German, in addition to his native Greek. He retired from the Hellenic Air Force with the rank of taxiarchos,^{[citation needed]} equivalent to a brigadier general or air commodore.

On 15 September 2022, he was one of 16 MEPs who voted against condemning President Daniel Ortega of Nicaragua for human rights violations, in particular the arrest of Bishop Rolando Álvarez.^[2][3]