Cognomen อ่อนนุช (Onnut 
, Onnuch 
, Ntug 
) , all over the world, is a very rare surname. The last name อ่อนนุช is habitual in Thailand, where it is a very rare surname, China, where it is an extremely rare surname, and the United States. More prevalently, อ่อนนุช is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Onnut | Thailand |
| Onnuch | United States, Thailand |
| Ntug | China, Nigeria |
Nutkhong, Nutklang, Nutmuang, Nutnakor, Nutnang, Nutnaphang, Nutnapun, Nutnathee, Nutnong, Nutpakhan, Nutparit, Nutphaen, Nutpruet, Nutsaengplee, Nutsaorn, Onaokpun, Onchorn, Ongnuch, Onkasem, Onnavong, Onngknat, Onnuta, Onnutcha, Onnuth, Onnutta, Onnuttha, Onranuch, Onsutti, Ontawong, Onthuwong, Onuk, and Onuttai