Surname กิจวิทย์ (Kijwit 
, กิจวิทย์ , Kijvit ) , all over the world, is a very rare last name. The cognomen กิจวิทย์ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, กิจวิทย์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| กิจวิทย์, Kijvit, Kijwit | Thailand |