The Tat language or Tat/Tati Persian or Tati (Tat: zuhun tati) is a Southwestern Iranian language related to, but mutually unintelligible with Persian and spoken by the Tats in Azerbaijan and Russia.
Pontic Greek (ποντιακά) is a Greek language originally spoken in the Pontus area on the southern shores of the Black Sea, northeastern Anatolia, the Eastern Turkish/Caucasus province of Kars, southern Georgia and today mainly in northern Greece.
Eastern Armenian (Armenian: արևելահայերեն arevelahayeren) is one of the two standardized forms of Modern Armenian, the other being Western Armenian.
Shirvani Arabic is a variety of Arabic that was once spoken in what is now central and northwestern Azerbaijan (historically known as Shirvan) and Dagestan (southern Russia).
Northern Kurdish (کوردیا ژۆرین; kurdiya jorîn), also called Kurmanji (کورمانجی; Kurmancî), is a group of Kurdish dialects predominantly spoken in southeast Turkey, northwest Iran, northern Iraq and northern Syria.
Kurdish (کوردی, Kurdî) is a continuum of Northwestern Iranian languages spoken by the Kurds in Western Asia.
Aghul, also spelled Agul, is a language spoken by the Aghuls in southern Dagestan, Russia and in Azerbaijan.
Budukh or Budugh is a Samur language of the Northeast Caucasian language family spoken in parts of the Quba Rayon of Azerbaijan.
Rutul is a language spoken by the Rutuls, an ethnic group living in Dagestan (Russia) and some parts of Azerbaijan.
Tsakhur (Tsaxur, Caxur) is a language spoken by the Tsakhurs in northern Azerbaijan and southwestern Dagestan (Russia).
The Udi language, spoken by the Udi people, is a member of the Lezgic branch of the Northeast Caucasian language family.
Lezgian /ˈlɛzɡiən/, also called Lezgi or Lezgin, is a language that belongs to the Lezgic languages.
Khinalug (also spelled Khinalig, Khinalugi, Xinalug(h), Xinaliq or Khinalugh) is a Northeast Caucasian language spoken by about 1,500 people in the villages of Khinalug and Gülüstan, Quba in the mountains of Quba Rayon, northern Azerbaijan.
Kryts (Kryc) is a Samur language of the Northeast Caucasian language family spoken in parts of the Quba Rayon of Azerbaijan by 6,000 people in 1975.
The Talysh language (Tolışi / Толыши / تالشی زَوُن) is a Northwestern Iranian language spoken in the northern regions of the Iranian provinces of Gilan and Ardabil and the southern regions of the Republic of Azerbaijan.
Khalaj, also known as Arghu, is a divergent Turkic language spoken in Iran and Azerbaijan.
Lishán Didán is a modern Jewish Aramaic language, often called Neo-Aramaic or Judeo-Aramaic.
Judeo-Tat or Juhuri (çuhuri / жугьури / ז'אוּהאוּראִ) is the traditional language of the Mountain Jews of the eastern Caucasus Mountains, especially Azerbaijan and Dagestan, now mainly spoken in Israel.
The Akhvakh language (also spelled Axvax, Akhwakh) is a Northeast Caucasian language from the Avar–Andic branch.
Lomavren (Armenian: Լոմավրեն lomavren) is a nearly extinct mixed language, spoken by the Lom people, that arose from language contact between a language related to Romani and Domari and the Armenian language.
Kilit is an extinct Iranian dialect of Azerbaijan that is closely related to Talysh.
Cek, also known as Jek, Dzhek, is a Northeast Caucasian language spoken by about 1,500 to 11,000 people in the villages of Jek in the mountains of northern Azerbaijan.