In the later parts of the Bible, where this kingdom is frequently mentioned (Books of Esther, Daniel, Ezra and Nehemiah), it is called Paras (Biblical Hebrew: פרס), or sometimes Paras u Madai (פרס ומדי), ("Persia and Media").

Although Persian (Farsi) is the predominant and official language of Iran, a number of languages and dialects from three language families—Indo-European, Altaic, and Afro-Asiatic—are spoken. Roughly three-fourths of Iranians speak one of the Indo-European languages.

Iran has a long history of scholarship that has created a rich culture of art, literature, poetry, music, cuisine, and architecture. Ancient Iranian thinkers wrote influential texts on philosophy and medicine, and it was an Iranian mathematician who invented algebra.

Muslims believe some musical sounds and instruments are harmful for the soul, particularly the musical pieces composed to accompany dance. So Iran's official media has been forbidden to broadcast these kinds of music.