Last name Roong (Roong 
) , worldwide, is quite a rare cognomen. The surname Roong is habitual in South-eastern Asia, particularly Malaysia, where it is quite a rare surname, Indonesia, where it is a rare surname, and Singapore. Not in comparison with a country's population, it most frequently occurs in South-eastern Asia, particularly Malaysia, Indonesia, and Thailand. Very seldom, Roong is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Roong | Indonesia, Singapore, Malaysia, Thailand, Vietnam |