Velikiye Luki Oblast
On August 1, 1927, the uyezds and governorates were abolished and Sebezhsky District, with the administrative center in Sebezh, was established as a part of Velikiye Luki Okrug of Leningrad Oblast. It included parts of former Sebezhsky Uyezd. On June 3, 1929, Sebezhsky District was transferred to Western Oblast. On July 23, 1930, the okrugs were also abolished and the districts were directly subordinated to the oblast. On January 29, 1935, Western Oblast was abolished and the district was transferred to Kalinin Oblast, and on February 5 of the same year, Sebezhsky District became a part of Velikiye Luki Okrug of Kalinin Oblast, one of the okrugs abutting the state boundaries of the Soviet Union. On May 4, 1938, the district was transferred to Opochka Okrug. On February 5, 1941, the okrug was abolished. Between July 9, 1941 and July 17, 1944, Sebezh was occupied by German troops. On August 22, 1944, the district was transferred to newly established Velikiye Luki Oblast. On October 2, 1957, Velikiye Luki Oblast was abolished and Sebezhsky District was transferred to Pskov Oblast.