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Family name Kumboon (Kumboon
, คุ้มบุญ) , all over the world, is a rare last name. The cognomen Kumboon is habitual in Thailand, where it is a rare surname, Malaysia, where it is a very rare surname, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Kumboon | Malaysia, United States, Thailand |