Cognomen Kim Oanh (Kim Oanh 
) , worldwide, is a rare family name. The cognomen Kim Oanh is characteristic of South-eastern Asia, particularly Vietnam, where it is a rare surname. Likewise, Kim Oanh is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kim Oanh | Japan, Germany, Vietnam, Philippines, United States |