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Surname Mungsaeng (Mungsaeng , มุ่งแสง) , globally, is a very rare last name. The cognomen Mungsaeng is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Mungsaeng | Thailand |
Lamai, Yaninee, Nattakit, Phusanisa, and Chalermrit