Cognomen Onpuns (Onpuns 
) , worldwide, is a very rare family name. The cognomen Onpuns is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Onpuns | Thailand |
Sabunnga, Rujsiroj, Wuttipon, Prapassorn, and Thanaphong