Surname กิจกาญจน์ (กิจกาญจน์ 
, Kitkarn , Kijkarn 
) , all over the world, is a very rare cognomen. The family name กิจกาญจน์ is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname. Likewise, กิจกาญจน์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kitkarn, Khitkarn, กิจกาญจน์ | Thailand |
| Kijkarn | United States, Thailand |
Khitakan, Kitchagarn, Kitchakan, Kitchakarn, Kitsakan, Kitsakarn, Kittakarn, and Kityakarn