Last name แตงอ่อน (Taengon 
, แตงอ่อน, Tang-On ) , worldwide, is a rare family name. The family name แตงอ่อน is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname. Very seldom, แตงอ่อน is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Taengon | United States, Thailand |
| Tang-On | Thailand |