Surname ช้างคำ (Changkam 
, Changkum 
, ช้างคำ) , globally, is a very rare last name. The cognomen ช้างคำ is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname. Also, ช้างคำ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Changkam | India, Thailand |
| Changkum | India, United States, Thailand |
| Changkarm | Thailand |