The Kielce pogrom was an outbreak of violence toward the Jewish community centre's gathering of refugees in the city of Kielce, Poland on 4 July 1946 by Polish soldiers, police officers, and civilians during which 42 Jews were killed and more than 40 were wounded. Polish courts later sentenced nine of the attackers to death in connection with the crimes.
As the deadliest pogrom against Polish Jews after the Second World War, the incident was a significant point in the post-war history of Jews in Poland. It took place only a year after the end of the Second World War and the Holocaust, shocking Jews in Poland, non-Jewish Poles, and the international community. It has been recognized as a symptom of the precarious condition of Eastern European Jewish communities in the aftermath of the Holocaust and as a catalyst for the flight from Poland of most remaining Polish Jews who had survived the war.
Relations between Jewish and non-Jewish Poles were already strained before the war, as antisemitic propaganda was spread by members of parliament and clergy. According to Alina Skibińska and Joanna Tokarska-Bakir, during the 1930s "the relations between the communities ... began to increasingly resemble apartheid."
During the German occupation of Poland, Kielce and the villages around it were completely ethnically cleansed by the Nazis of its pre-war Jewish community, most of which perished in The Holocaust. By the summer of 1946, some 200 Jews, many of them former residents of Kielce, had returned from the Nazi concentration camps or refuge in the Soviet Union. About 150–160 of them were quartered in a single building administered by the Jewish Committee of Kielce Voivodeship at Planty, a small street in the centre of the town.
On 1 July 1946, an eight-year-old non-Jewish Polish boy, Henryk Błaszczyk, was reported missing by his father Walenty Błaszczyk. According to the father, upon his return two days later the boy claimed he had been kidnapped by an unknown man, allegedly a Jew or a gypsy.