Subdivisions of Uzbekistan
The Article 68 of the constitution of Uzbekistan defines:
Uzbekistan is divided into twelve provinces (viloyatlar, singular viloyat, compound noun viloyati e.g., Toshkent viloyati, Samarqand viloyati, etc.), one autonomous republic (respublika, compound noun respublikasi e.g. Qaraqalpaqstan Avtonom Respublikasi, Karakalpakistan Autonomous Republic), and one independent city (shahar. compound noun shahri, namely Toshkent shahri).
The provinces are further divided into districts (tuman).
Pre 1991 history
For the history during Soviet time see: Uzbek Soviet Socialist Republic#Subdivisions