Family name กิจจาภรณ์ (Kitjaporn 
, กิจจาภรณ์ , Kijjaporn 
) , worldwide, is a very rare surname. The family name กิจจาภรณ์ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. More prevalently, กิจจาภรณ์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| กิจจาภรณ์, Kitjaporn, Kijjapon | Thailand |
| Kijjaporn | United States, Thailand |
Kijjaphon, Kitchaphon, Kitchaporn, Kitsadaphon, and Kitsadaphorn