Cha Ung (Khmer: ចាអ៊ុង) is a commune in Ou Chum District in north-east Cambodia.

It contains Char Ung Ket, Char Ung Chan, Phlay Ampil, Thuoy Tum, Char Ung Kao villages and has a population of 1,733.

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

[2] The land alienation rate in Cha Ung was moderate as of January 2006.

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