During the Soviet era, in the 20s and 50s of the XX century, repressions and forced migration were widespread. We have used methods of historical retrospective, analysis and synthesis. Documents of the Archives of the President of the Republic of Kazakhstan were used in the study. It was found that during the Soviet era, mass deportations to Kazakhstan led to the deportation of Poles in 1936, Koreans in 1937-1938, Iranians in 1938-1939, Germans in 1941, Karachays in 1943, and Chechen-Ingush in 1944. In addition, there was a case of forcible dissolution of the National Autonomies of nations. As a result, thousands and millions of people of different nationalities were forcibly evicted. The fate of deported peoples changed after I.V. Stalin’s death in 1953. In 1956, XX Congress was held in the Soviet Union. It paved the way for the liberation from the “cult of personality” and the restoration of the rights of repressed and deported peoples, the process of rehabilitation. The rehabilitation process was carried out from 1954 to 1960, the rights of persecuted peoples were restored and the autonomies were reorganised.