Lak is spoken by about 130.000 people. The vast majority of the speakers live in the mountainous south of the Dagestan Republic in southern Russia. The rest live scattered in Azerbaijan, Georgia, Kazakhstan, Kyrgyzstan, Tajikistan, Turkey, Turkmenistan, Ukraine, and Uzbekistan.
Lak belongs to the the Northeast Caucasian language family.
The main dialects are Kumux, Vicxin, Vixlin, Ashtikulin, and Balxar-Calakan.
Lak is one of the 14 official state languages of the Dagestan Republic.
It became a written language with an Arabic based writing system at the beginning of the 20th century. After the October revolution it first used a Latin alphabet which was later replaced by Cyrillic letters. The literary language is based on the Kumux dialect.
The case system of Lak is very rich because of the great number of locative cases. The noun has about 40 cases. Lak has four noun classes. The noun uses 'Ablaut' (i.e. substitution of the stem vowel) to form the stem of the oblique cases. The morphology of the verb, however, is relatively simple. The verb agrees with the noun in number, person and class.
Lak is an ergative language.