Uzbekistan, officially the Republic of Uzbekistan, is a country in Central Asia. It is one of two doubly landlocked countries as it is surrounded by Kazakhstan, Kyrgyzstan, Tajikistan, Afghanistan and Turkmenistan. Uzbekistan is a secular, unitary constitutional republic. It comprises 12 provinces (vilayats) and one autonomous republic, Karakalpakstan. The capital and largest city of Uzbekistan is Tashkent.