Kak (Khmer: កក់, pronounced [kɑk]) is a commune (khum) in Bar Kaev District in northeast Cambodia.

It contains six villages and has a population of 1,729.

[1] In the 2007 commune council elections, all five of its seats were awarded to members of the Cambodian People's Party.

[2] Land alienation has been a major problem in Kak; the indigenous community now owns very little agricultural land.

[3] (See Ratanakiri Province for background information on land alienation.)