Arin is an extinct Yeniseian language formerly spoken in Russia by the Arin people along the Yenisei River, predominantly on its left shore, between Yeniseysk and Krasnoyarsk,[2] north of the Minusinsk region.

However, it has been suggested that the Arin people had historically occupied a larger geographical range.

It became extinct in the 18th century,[2][3] with the death of Arzamas Loskutov,[1] who was an informant for Gerhard Friedrich Müller in 1731.

[9] The vowel system in Arin is as follows:[5] Consonants in parentheses are sparsely attested or unattested.

[5] Etymological analysis suggests that speakers of the Arin language, as with other members of the Yeniseian people, were bilingual in Siberian Turkic languages; for example, the Arin word teminkur (meaning "ore") has been suggested to stem from the Old Turkic compound word *tämir qān (meaning "iron blood").