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