Surname Ung Keng Looi (Ung Keng Looi 
) , worldwide, is an extremely rare last name. The family name Ung Keng Looi is habitual in South-eastern Asia, particularly Malaysia, where it is a very rare surname, and Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Ung Keng Looi | Thailand, Malaysia |