The Kaunas (Kovno) pogrom, under the direction of the Nazi SS Brigadeführer Franz Walter Stahlecker, was a massacre of Jewish people living in Kaunas, Lithuania that took place in from June 25 to June 29, 1941 – the first days of the Operation Barbarossa and of Nazi occupation of Lithuania. The most infamous incident occurred in the Lietūkis garrage, where several Jews were publicly tortured and executed on June 26. After June, systematic executions took place at various forts of the Kaunas Fortress, especially the Seventh and Ninth Forts. Starting on June 25, Nazi-organized units attacked Jewish civilians in the Kaunas suburb of Slobodka (known to Lithuanians as Vilijampolė, a Jewish suburb hosting the world-famous Slobodka yeshiva). As of June 28, 1941, according to Stahlecker, 3,800 people had been killed in Kaunas and a further 1,200 in other towns in the immediate region. Some believe Stahlecker exaggerated his accomplishments.
At least 5,000 Lithuanian Jews of Kaunas, largely taken from the city's Jewish ghetto, were transported to the Ninth Fort and killed. In addition, Jews from as far as France, Austria and Germany were brought to Kaunas during the course of Nazi occupation and executed in the Ninth Fort. In 1944, as the Soviets moved in, the Germans liquidated the ghetto and what had by then come to be known as the "Fort of Death", and the prisoners were dispersed to other camps. After World War II, the Soviets again used the Ninth Fort as a prison for several years.