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Last name Koeng (เกิง , Koeng , ก้อง) , globally, is a rare cognomen. The last name Koeng is characteristic of Malaysia, where it is a rare surname, Switzerland, and Cambodia, where it is a very rare surname. Measured by absolute frequency, this name is the most popular in Malaysia, Indonesia, and the United States. Likewise, Koeng is the forename as well as the last name.