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Linguistics · History · Jun 9, 2026

Farsi, Dari, and Tajik

Persian is spoken across three countries under three names, and they are closer than many people expect.

Persian has three main standard varieties: Farsi in Iran, Dari دری in Afghanistan, and Tajik in Tajikistan. Linguists treat them as one language with regional forms.

How alike are they?

Farsi and Dari are highly mutually intelligible, much like British and American English. A speaker of one can read and understand the other with ease, allowing for accent and some vocabulary differences.

What sets them apart

Dari keeps some older pronunciations and vocabulary that Iranian Farsi has changed. Each variety has borrowed differently: Iranian Farsi from French and Arabic, Dari with its own regional terms, and Tajik heavily from Russian.

The big difference: script

Farsi and Dari both use the Perso-Arabic script. Tajik, however, is written in the Cyrillic alphabet, a legacy of the Soviet era, which makes it look very different on the page despite sounding familiar.

If you learn Farsi, you have a strong head start on Dari and a real foothold in Tajik once you adjust to its script.

Category: LinguisticsCategory: HistoryTags: Dari, Tajik, Persian, varieties

Common questions

01Are Farsi, Dari, and Tajik the same language?
They are three standard varieties of one Persian language, broadly mutually intelligible, spoken in Iran, Afghanistan, and Tajikistan.
02What is the main difference between Farsi and Tajik?
Tajik is written in the Cyrillic alphabet rather than the Perso-Arabic script, and has borrowed heavily from Russian, though it remains Persian.
03If I learn Farsi, can I understand Dari?
Largely yes. Iranian Farsi and Afghan Dari are highly mutually intelligible, similar to British and American English.