Ka Choun (Khmer: កាចូន) is a commune in Veun Sai District in northeast Cambodia.

It contains six villages and has a population of 1,397.

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

[2] Land alienation is a problem of moderate severity in Ka Choun.

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