Family name อ่อนอุบล (Onubon 
, อ่อนอุบล) , in all the world, is a very rare last name. The cognomen อ่อนอุบล is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Much less frequently, อ่อนอุบล is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Onubon | Thailand |