Surname เยาวนาค (เยาวนาค 
) , throughout the world, is an extremely rare cognomen. The family name เยาวนาค is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Likewise, เยาวนาค is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| เยาวนาค | Thailand |