Konstantinos Mitsou (Greek: Κωνσταντίνος Μήτσου; 1909 – 27 June 1985) was a Lieutenant General of the Hellenic Gendarmerie who served as General Inspector of Gendarmerie for Northern Greece in the early 1960s and was involved in many acts of political repression, most famously the assassination of left-wing Member of Parliament Grigoris Lambrakis in May 1963.
His involvement in funding and directing various violent fascist organizations throughout Northern Greece, and especially Thessaloniki, was uncovered by examining magistrate Christos Sartzetakis and Mitsou was jailed, prompting the fall of the conservative Karamanlis government.
In May 1963, after the assassination of Lambrakis, his role in supporting violent far-right groups was uncovered by examining magistrate Christos Sartzetakis.
Mitsou, played by French actor Pierre Dux, is the main antagonist in the celebrated Costa Gavras political thriller Z, where he is only referred to as "the General".
Many of Mitsou's traits, such as giving florid and dramatic speeches about the dangers of socialism and communism are heavily parodied in the film.