Family name คำทุม (Word 
, คำทุม, Khamtum 
) , worldwide, is quite a common surname. The family name คำทุม is characteristic of Myanmar, where it is quite a rare surname, Ghana, and the United States. Measured by absolute frequency, it is the most numerous in the United States, Myanmar, and Indonesia. Much less frequently, คำทุม is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Word | Ghana, Myanmar, United States, Egypt, Indonesia |
| Khamtum | Thailand, Myanmar |