Cognomen อ่ง (Ong 
, อ่ง) , across the world, is a widespread last name. The last name อ่ง is characteristic of Singapore, where it is a prevalent surname, Malaysia, where it is a common surname, and Bermuda (explore the name in all countries). Not in comparison with a country's population, it is the most numerous in South-eastern Asia, particularly Malaysia, Singapore, and Philippines. Also, อ่ง is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ong | Philippines, Singapore, United States, Indonesia, Malaysia |