Cognomen Gaentao (Gaentao 
) , globally, is a very rare family name. The cognomen Gaentao is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, Gaentao is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gaentao | Thailand |
Atchara, Prakasit, Natnicha, Thanakorn, Phenprapha, and Chalermchai