Last name กาฬกาญจน์ (Kan Kan 
, กาฬกาญจน์ 
) , across the world, is a rare cognomen. The surname กาฬกาญจน์ is habitual in Thailand, where it is a rare surname, Nigeria, and Chile, where it is an extremely rare surname. Likewise, กาฬกาญจน์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kan Kan | Japan, Chile, Nigeria, Philippines |
| กาฬกาญจน์ | Thailand |