Western Persian or Iranian Persian is the most widely spoken dialect of Persian language. It is natively known as Farsi or Parsi. It is officially spoken in Iran and also by various minorities in Iraq and the Persian Gulf states. It is mutually intelligible with Dari, the dialect of Persian spoken in Afghanistan, and Tajiki, the dialect of ...

Old Persian is known chiefly from cuneiform inscriptions dating from the time of the Achaemenid kings of ancient Persia (6th–4th cent. B.C.). Old Persian was highly inflected, as was Avestan, which is regarded by some as a form of Old Persian and by others as a separate tongue. Avestan was the language of the sacred texts of Zoroastrianism ...

Middle Persian or Pahlavi, also known by its endonym Pārsīk or Pārsīg (𐭯𐭠𐭫𐭮𐭩𐭪) in its later form, is a Western Middle Iranian language which became the literary language of the Sasanian Empire.For some time after the Sasanian collapse, Middle Persian continued to function as a prestige language.

Dari ( Fārsī-ye Darī) is a dialect of the Persian language. It is the Persian language as spoken in Afghanistan. It is the second official language of Afghanistan, and is widely used by the government and most media agencies. It is mainly spoken by …

波斯语（ فارسی/Fārsī ‎）屬於印欧语系 印度-伊朗語族 伊朗语支，是一种形成于8至9世纪间的文学语言。 是今天伊朗的官方语言，作为其分支的达利语和塔吉克语分别是阿富汗和塔吉克斯坦的官方语言。 由于历史与宗教的原因，现代波斯语中，有近60%的词汇来自属于闪含语系的阿拉伯语。