The Lezgic languages (also Lezgian or Lezghian) are one of seven branches of the Northeast Caucasian language family. Lezgin and Tabasaran are literary languages. Khinalug may either be Lezgic or an independent branch of the Northeast Caucasian family.

The Lezgic languages are relevant to the glottalic theory of Indo-European, because several have undergone the voicing of ejectives that have been postulated but widely derided as improbable in that family. The correspondences have not been well worked out (Rutul is inconsistent in the examples), but a few examples are:

A similar change has taken place in non-initial position in the Nakh languages.