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Family name Kumlangkeng (Kumlangkeng ) , all around the world, is a very rare surname. The cognomen Kumlangkeng is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Kumlangkeng | Thailand |
Jongjit, Jenjira, Surachai, Kittipong, and Chompunoot