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450px|right|thumb|Subdivisions of Uzbekistan
This article discusses the administrative-territorial division of the Republic of Uzbekistan. The Article 68 of the constitution of Uzbekistan defines:
Divisions
The top level is formed by the regions (, plural viloyatlar), the autonomous republic of Karakalpakstan and the independent city of Tashkent. The regions Karakalpakstan and Tashkent are further divided into districts (, plural tumanlar) and cities of regional subordination. The districts are divided into cities of district subordination, urban-type settlements () and citizen assemblies of villages ().
, there is one autonomous republic, 12 regions and one independent city:
On September 16, 1924, an extraordinary session of the Central Electoral Commission of the Turkestan ASSR ruled to go forward with the national-state delimitation. This implied the establishment of the Uzbek SSR as part of the USSR. It comprised part of the lands of the former Samarkand, Semirechye and Ferghana Oblasts, as well as the Bukhara and Khorezm SSRs abolished at that time. This decision was put forward by the 2nd session of the All-Russian Central Executive Committee on October 14, 1924 and later approved by the 12th All-Russian Congress of Soviets on May 11, 1925. The date of foundation of the Uzbek SSR is considered October 27, 1924. Its center became Samarkand. Moreover, the Tajik Autonomous Soviet Socialist Republic was formed as part of the Uzbek SSR.
1924–1938
In 1925, oblasts were introduced in the Uzbek SSR. The oblasts were dividend into uyezds, and those, in turn, were divided into volosts. As of January 1, 1926, the administrative-territorial division of the Uzbek SSR were as follows:
{| class="wikitable"
|-
! Oblasts !! Uyezds
|-
| Zeravshan || Bukhara, Gidzhuvan, Kermin, Nur-Ata
|-
| Kashka-Darya || Bekbud, Guzar, Shakhrisyabz
|-
| Samarkand || Jizzakh, Katta-Kurgan, Samarkand, Khodzhent
|-
| Surkhan-Darya || Baysun, Shirabad, Yurchin
|-
| Tashkent || Mirza-Chul, Tashkent
|-
| Ferghana || Andijan, Kokand, Namangan, Ferghana, Kaniabadam district
|-
| Khorezm || Gurlen, New-Urgench, Khiva, Shurakhan
|-
| Tajik ASSR || Gorno-Badakhshan, Garm, Dyushambe, Kulyab, Kurgan-Tyubin, Penjikent, Ura-Tyubin viloyats
|-
| Kenimeh District <br /><small>having region's rights</small> || no
|}
However, oblasts and uyezds were abolished in the same year. Instead, they were converted into 10 okrugs: Andijan, Bukhara, Zeravshan, Kashka-Darya, Samarkand, Surkhan-Darya, Tashkent, Ferghana, Khodjent and Khorezm. The okrugs were further divided into rayons (analogous to districts).
In 1929, the Tajik Autonomous Soviet Socialist Republic and the Khodjent Okrug withdrew from the Uzbek SSR to become the Tajik SSR. This decision was approved by the CEC of the USSR on December 5, 1929.
In 1930, Tashkent became the capital of the Uzbek SSR. In the same year, all okrugs, as elsewhere in the Soviet Union, were abolished, and their constituent territories were transferred to the direct subordination of the soviet republic. In 1931, there were 71 rayons (districts) in the Uzbek SSR (which were divided into 1494 village councils) and 9 cities of republican subordination (which managed another 204 village councils).
In 1935, some of the rayons of the Uzbek SSR were merged into Kashka-Darya Okrug.
On December 5, 1936, the Kara-Kalpak ASSR was transferred to the Uzbek SSR from the RSFSR.
1938–1987
On January 15, 1938, the Uzbek SSR underwent again some transformations to comprise the newly established Bukhara (including Surkhan-Darya Okrug), Samarkand, Tashkent, Ferghana and Khorezm Oblasts.
{| class="wikitable mw-collapsible mw-collapsed collapsible"
! Oblasts !! Rayons and cities of regional subordination
|-
|Bukhara
|Beshkent, Bukhara, Wabkent, Gidzhuvan, Guzar, Dekhkanabad, Kagan, Kamashin, Karakul, Karshi, Kassan, Kenimekh, Kerminin, Kzyl-Tepa, Kitab, Rometan, Sverdlovsk, Chirakchin, Shafrikan, Shakhrisabz, Yakkabag, Bukhara city, Gijuvan city, Kagan city, Karshi city, Shakhrisyabz city
|-
| Surkhan-Darya Okrug <br /> <small> as part of the Bukhara region </small>
|Baysun, Denausky, Dzhar-Kurgan, Sary-Assiya, Termez, Shirabad, Shurchi, Termez city
|-
|Samarkand
|Ak-Daryin, Bulungur, Galla-Aral, Dzhambay, Zaamin, Kara-Darya, Katta-Kurgan, Mitan, Narpay, Nurata, Pai-Aryk, Past-Dargomy, Pakhtakor, Samarkand, Urgut, Farish, Khatyrchi, Samarkand city, Jizzakh city, Katta-Kurgan city
|-
|Tashkent
|Ak-Kurgan, Akhan-Garan, Begovat, Upper Chirchik, Kalinin, Mirzachul, Lower-Chirchik, Ordzhonikidze, Parkent, Pskent, Mid-Chirchik, Havast, Chianz, Yangi-Yulsky, Tashkent city, Chirchik city, Yangi-Yul city
|-
|Ferghana
|Aim, Alty-Aryk, Andijan, Baghdat, Balykchi, Voroshilov, Jalal-Kuduk, Izbaskent, Kaganovich, Kassan-Say, Kirov, Kokand, Kuybyshev, Lenin, Margelan, Markhamat, Molotov, Namangan, Narin, Pap, Pakhta-Abad, Stalin, Tashlak, Tyur-Kurgan, Uychin, Uch-Kurgan, Ferghana, Khoji-Abad, Chust, Yangi-Kurgan, Fergana city, Andijan city, Kokand city, Leninsk city, Margelan city, Namangan city, Chust city
|-
|Khorezm
|Gurlen, Kosh-Kupyr, Mangit, Urgench, Khazarasp, Hankin, Khiva, Shavat, Yangi-Aryk, Urgench city, Khiva city
|-
|Kara-Kalpak Autonomous Soviet Socialist Republic
|Kara-Uzyak, Kegeilin, Kipchak, Kuibyshev, Kungrad, Muynak, Tamdyn, Takhta-Kupyr, Turtkul, Khodzheilyn, Chimbay, Shabbaz, Turtkul city, Nukus city, Khojeyli city, Chimbay city
|}
On March 6, 1941, Andijan and Namangan were taken off the Fergana Oblast to become separate regions, and the Surkhan-Darya Okrug was transformed into the Surkhan-Darya Oblast. On January 20, 1943 part of the Bukhara Oblast was withdrawn to enter a part of the Kashka-Darya Oblast.
{| class="wikitable mw-collapsible mw-collapsed collapsible"
! Oblasts !! Rayons and cities of regional subordination
|-
|Andijan
|Aim, Altyn-Kul, Andijan, Balykchi, Voroshilov, Jalal-Kuduk, Izbaskent, Lenin, Markhamat, Pakhtaabad, Stalin, Khaldyvanbek, Khojiabad, Chinabad, Andijan city, Lenin city
|-
|Bukhara
|Alat, Bukhara, Wabkent, Gidzhuvan, Kagan, Karakul, Kenymekh, Kermin, Kzyl-Tepa, Rometan, Sverdlovsk, Tamdyn, Shafrikan, Bukhara, Gijuvan, Kagan
|-
|Kashka-Darya
|Beshkent, Guzar, Dekhkanabad, Kamashin, Karshi, Kassan, Kitab, Kok-Bulak, Mirakin, Chirakchi, Shakhrisyabz, Yakkabag, Karshi city, Shakhrisyabz city
|-
|Namangan
|Kassansai, Namangan, Naryn, Papal, Tyuria-Kurgan, Uychin, Uch-Kurgan, Chust, Yangi-Kurgan, Namangan city, Chust city
|-
|Samarkand
|Ak-Darya, Bulungur, Galla-Aral, Dzhambay, Dzhizak, Zaamin, Ishtyhan, Kara-Darya, Kara-Kishlak, Katta-Kurgan, Komsomolsk, Kushrabad, Mitan, Narpay, Nuratinsk, Pai-Aryk, Past-Dargom, Pakhtakor, Samarkand, Urgut, Farish, Khatyrchi, Samarkand city, Jizzakh city, Katta-Kurgan city
|-
|Surkhan-Darya
|Baysun, Denau, Dzhar-Kurgan, Sary-Assiya, Termez, Uzun, Shirabad, Shurchi, Termez city
|-
|Tashkent
|Ak-Kurgan, Ahan-Garan, Begovat, Bukin, Upper Chirchik, Kalinin, Karasu, Mirzachul, Lower Chirchik, Ordzhonikidze, Parkent, Pskent, Middle Chirchik, Syr-Darya, Tashkent, Hawast, Chainz, Yangi-Yul, Tashkent city, Angren city, Begovat city, Chirchik city, Yangi-Yul city
|-
|Ferghana
|Alti-Aryk, Akhunbabaev, Baghdad, Buvayd, Vuadil, Gors, Kaganovich, Kirov, Kokand, Kuvasay, Kuvin, Kuibyshev, Molotov, Sokh, Tashlak, Fergana, Frunzen, Fergana city, Kokhand city, Margelan city
|-
|Khorezm
|Gurlensky, Kosh-Kupyr, Mangit, Urgench, Khazarasp, Hankin, Khiva, Shavat, Yangi-Aryk, Urgench, Khiva
|-
|Kara-Kalpak Autonomous Soviet Socialist Republic
|Kara-Uzyak, Kegeylin, Kipchak, Kuibyshev, Kungrad, Muynak, Takhta-Kupyr, Turtkul, Khojeyli, Chimbay, Shabbaz, Turtkul city, Nukus city, Khojeyli city, Chimbay city
|}
By a decree of the Presidium of the USSR Armed Forces dated February 13, 1956, part of the lands of the Hungry Desert and the Bostandyk (now Bostanlyk) district were taken from the Kazakh SSR and given to the Uzbek SSR. In 1963, a decree of the Presidium of the Supreme Soviet of the USSR also ruled that 36.6 thousand sq. km of underutilized lands of Chimkent and Kzyl-Orda belonging to Kazakh SSR be allocated to Uzbekistan.
On January 25, 1960, the Kashkadarya and Namangan Oblasts were abolished. The former became mostly part of the Surkhan-Darya Oblast, while the latter was distributed between Andijan and Ferghana Oblasts. Shortly thereafter, on February 16, 1963, a new Syrdarya Oblast was established from the parts of the newly acquired agricultural lands of Samarkand and Tashkent regions (the center originally set in Yangiyer, however starting from November 1963 in Gulistan).
On February 7, 1964 the Kashkadarya Oblast was restored followed by the Namangan Oblast on December 18, 1967.
On December 29, 1973 the Jizzakh Oblast was established from the part of the Syrdarya Oblast. Navoi was the last oblast to be established from the parts of the Bukhara and Samarkand oblasts on April 20, 1982. Consequently, as of January 1, 1987, the administrative-territorial division of the Uzbek SSR was as follows: