Tajikistan, officially the Republic of Tajikistan, is a landlocked country in Central Asia. It has an area of 143,100 km2 (55,300 sq mi) and an estimated population of 9,749,625 people. Its capital and largest city is Dushanbe. It is bordered by Afghanistan to the south, Uzbekistan to the west, Kyrgyzstan to the north, and China to the east. It is separated narrowly from Pakistan by Afghanistan's Wakhan Corridor. The traditional homelands of the Tajiks include present-day Tajikistan as well as parts of Afghanistan and Uzbekistan.

Tajikistan is a presidential republic consisting of four provinces. Most of Tajikistan's population belongs to the Tajik ethnic group, who speak the Tajik language — the first official language — making it one of the three Persian speaking countries alongside Afghanistan and Iran. Russian is used as the official inter-ethnic language. While the state is constitutionally secular, Islam is nominally adhered to by 98% of the population. In the Gorno-Badakhshan oblast, despite its sparse population, there is large linguistic diversity where Rushani, Shughni, Ishkashimi, Wakhi and Tajik are some of the languages spoken. Mountains cover more than 90% of the country.

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