Cognomen ถนอมไชย (ถนอมไชย 
) , around the world, is a very rare last name. The family name ถนอมไชย is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Likewise, ถนอมไชย is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ถนอมไชย | Thailand |