Friedrich (Fritz) Schubert (Greek: Φριτς Σούμπερτ; 21 February 1897, Dortmund – 22 October 1947, Heptapyrgion) was a Greek-speaking German NCO Sonderführer of the Nazi Wehrmacht. As head of the Jagdkommando Schubert, a paramilitary force terrorizing the civilian population during the Nazi occupation of Greece in World War II, he committed numerous atrocities in Crete and Macedonia.
Tried by a special court for war crimes in Athens, he was found guilty over the killing of over 250 civilians, sentenced 27 times to death and executed.
According to some sources, Schubert was born as Petros Konstantinidis (Greek: Πέτρος Κωνσταντινίδης), son to a rich tobacco merchant in Smyrna and emigrated to Germany at a young age. There, he joined the National Socialist Party and became a dedicated Nazi. Schubert made his first appearance on Crete in 1941 as an interpreter to the German commander of Rethymno. Later, he succeeded Hartmann as the head of the German counter-espionage network. Due to his speaking of Turkish and his strong accent of Greek, Cretans nicknamed him "the Turk". In 1943, after recruiting several convicted Greek criminals and Germanophiles (e.g., members of the Tzoulias family from Krousonas), he established his notorious Jagdkommando (Greek: Εθνικό Απόσπασμα Καταδίωξης Κομμουνιστών - ΕΑΚΚ) in eastern Crete.