Tajik, spoken in Tajikistan and parts of Uzbekistan, Afghanistan, and China, is a variety of Persian. It is the official language of Tajikistan and is written in the Cyrillic script. While Persian and Tajik share linguistic roots, they have distinct features, including vocabulary differences and certain grammatical variations. Tajik has absorbed loanwords from Russian due to historical ties with the Soviet Union.

Efforts to promote the Tajik language include its use in education and media, but challenges persist, such as the influence of Russian and the prevalence of other languages in the region. Tajik is significant in preserving the cultural identity of the Tajik people and plays a role in literature, music, and daily communication.