Colonel-General
* 3rd of October 1907
† 6th of June 1977
(NKVD)
(Сергей Никифорович Круглов)
| 1938-12-28 | Major of State Security |
| 1939-09-04 | Commissar of State Security 3rd Rank |
| 1943-02-04 | Commissar of State Security 2nd Rank |
| 1945-07-09 | Colonel-General |
| 1938-12-20 | – | 1939-02-28 | Special Plenipotentiary of the Commissariat of Internal Affairs NKVD |
| 1939-02-28 | – | 1941-02-25 | Deputy People's Commissar of Internal Affairs NKVD |
| 1941-02-25 | – | 1941-07-30 | First Deputy People's Commissar of Internal Affairs NKVD |
| 1941-06-24 | – | 1941-07-16 | Member of the Council of Evacuation, Council of People's Commissars |
| 1941-06-26 | – | 1941-07-13 | Member of Military Council, Reserve Front Armies |
| 1941-07-30 | – | 1941-10-12 | Member of Military Council, Reserve Front |
| 1941-10-10 | – | 1942-XX-XX | Member of Military Council, Western Front |
| 1941-10-XX | – | 1943-XX-XX | Head of Defence Construction Directorate |
| 1941-11-13 | – | 1942-04-XX | Commanding Officer 4th Engineering Army |
| 1943-04-26 | – | 1945-10-25 | First Deputy People's Commissar of Internal Affairs NKVD |
| 1945-10-25 | – | 1946-03-18 | People's Commissar of Internal Affairs |
| 1946-03-18 | – | 1953-03-05 | Minister of Internal Affairs |
| 1953-03-11 | – | 1953-06-26 | First Deputy Minister of Internal Affairs |
| 1953-06-26 | – | 1956-01-31 | Minister of Internal Affairs |
| 1956-02-13 | – | 1957-08-XX | Deputy Minister for Electrification |
| 1957-08-XX | – | 1958-07-XX | Deputy Chairman of Kirov Economic Administration |
| 1958-07-XX | Retired |